CN113284439A - Economic management information classified display propaganda display rack - Google Patents
Economic management information classified display propaganda display rack Download PDFInfo
- Publication number
- CN113284439A CN113284439A CN202110543456.2A CN202110543456A CN113284439A CN 113284439 A CN113284439 A CN 113284439A CN 202110543456 A CN202110543456 A CN 202110543456A CN 113284439 A CN113284439 A CN 113284439A
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- display
- display board
- fixedly connected
- management information
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/0006—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like planar structures comprising one or more panels
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/18—Book-keeping or economics
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
- G09F11/02—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being secured to rotating members, e.g. drums, spindles
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Accounting & Taxation (AREA)
- Development Economics (AREA)
- Economics (AREA)
- General Business, Economics & Management (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention discloses an economic management information classified display propaganda display frame which comprises a device main body, a hollow cavity and a first display board, wherein the hollow cavity is connected to one side of the surface of the device main body in a penetrating mode, the first display board is movably connected to the inside of the hollow cavity, a movable shaft is movably connected to the middle of the top of the first display board, a threaded rod is movably connected to one side of the middle of the hollow cavity, one end of the threaded rod is fixedly connected with a limiting baffle, and the second display board is movably connected to the other side of the first display board. This economic management information classification display propaganda show shelf, the flexibility of adjusting supporting mechanism and having improved the device main part through setting up, made things convenient for the staff to come adjusting device according to the actual demand, the practicality of device main part has been improved through setting up convertible two-sided show mechanism, the user of service can show different show information at the show face of difference to accomplish categorised show, improved the functional of device main part through setting up light filling mechanism, can provide illumination for the show board when ambient light is not good.
Description
Technical Field
The invention relates to the technical field of economic management propaganda, in particular to an economic management information classified display propaganda display rack.
Background
The economic management profession cultivates high-level talents which have solid theoretical work, reasonable knowledge structure, wide visual field, real pursuit, courage development and innovation, can engage in economic management actual work and economic management theoretical research.
Present economic management information display propaganda exhibition frame is mostly only equipped with a show board, can't accomplish categorised show relevant information, lead to the device to have higher limitation in the use, present economic management information display propaganda exhibition frame functional not good, can't provide light for the show surface when ambient light is not good, present economic management information display propaganda exhibition frame flexibility is not good, staff can't come adjusting device according to actual demand in the use, inconvenience has been brought for the staff.
Disclosure of Invention
The invention aims to provide a propaganda display rack for classifying and displaying economic management information, which aims to solve the problems that related information cannot be classified and displayed, the functionality is poor and the flexibility is poor in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the advertising display rack for the classified display of the economic management information comprises a device main body, a hollow cavity and a first display board, wherein the hollow cavity is connected to one side of the surface of the device main body in a penetrating way, the first display board is movably connected to the inside of the hollow cavity, a movable shaft is movably connected to the middle part of the top of the first display board, wherein,
one side of the middle part of the hollow cavity is movably connected with a threaded rod, one end of the threaded rod is fixedly connected with a limiting baffle, the other side of the first display board is movably connected with a second display board, and the other side of the second display board is movably connected with a third display board;
the LED light supplementing device is characterized in that a clamping groove is fixedly connected to the top of the device main body, an installation block is embedded and connected into the clamping groove, an LED light supplementing plate is fixedly connected to the front of the installation block, a connecting block is fixedly connected to the top of the LED light supplementing plate, a power interface is fixedly connected to the surface of the connecting block, and a power storage box is fixedly connected to the back of the connecting block;
the bottom fixedly connected with of device main part connects the bottom plate, the bottom both sides fixedly connected with activity collets of connecting the bottom plate, the inside through connection of activity collets has the slide bar, the top fixedly connected with spliced pole of slide bar, one side embedding of spliced pole is connected with the gim peg, the bottom fixedly connected with device base of spliced pole, the inside embedding of device base is connected with firm sucking disc.
Preferably, the outer wall of the threaded rod is fixedly connected with an auxiliary rotating block, and the cross section of the auxiliary rotating block is rectangular.
Preferably, one side of the connecting bottom plate is embedded and connected with a temporary storage groove, and the cross section of the temporary storage groove is rectangular.
Preferably, the middle part of the bottom of the connecting bottom plate is fixedly connected with an adjusting support block, and the surface of the adjusting support block is provided with a soft cushion.
Preferably, the well cavity of device main part surface one side, the first show board of well cavity inside, the loose axle of first show board top middle part, the threaded rod of well cavity middle part one side, the limit baffle of threaded rod one end, the second show board of first show board opposite side, the third show board of second show board opposite side constitutes convertible two-sided show mechanism jointly.
Preferably, the light supplementing mechanism is composed of a clamping groove in the top of the device body, an installation block inside the clamping groove, an LED light supplementing plate on the front side of the installation block, a connection block on the top of the LED light supplementing plate, a power supply interface on the surface of the connection block and an electricity storage box behind the connection block.
Preferably, the device comprises a connecting bottom plate at the bottom of the device body, movable sleeve blocks on two sides of the bottom of the connecting bottom plate, sliding rods inside the movable sleeve blocks, connecting columns at the tops of the sliding rods, positioning bolts on one sides of the connecting columns, a device base at the bottom of the connecting columns, and stable suckers inside the device base, wherein the adjusting and supporting mechanism is formed jointly.
Compared with the prior art, the invention has the beneficial effects that:
(1) the advertising display rack with the economic management information classified display function is provided with the auxiliary rotating blocks, the rectangular auxiliary rotating blocks provide a force application point for related workers, and the workers can hold the auxiliary rotating blocks when needing to rotate the threaded rods without using other auxiliary tools;
(2) according to the economic management information classified display propaganda display rack, the temporary storage groove is arranged, the storage space is arranged in the temporary storage groove, and related workers often need to use pens in the process of using the device, but the pens are extremely easy to lose, and the workers can put the pens into the temporary storage groove when the pens are not needed to be used;
(3) the economic management information classified display propaganda display rack is characterized in that the adjusting support blocks are arranged, related workers can support the adjusting support blocks to move the device body when adjusting the height of the device body, and meanwhile, soft pads on the surfaces of the adjusting support blocks can protect the hands of the workers;
(4) the economic management information classified display propaganda display rack comprises a turnover type double-sided display mechanism, wherein the front side and the back side of a first display board, a second display board and a third display board can be subjected to information display, related workers can perform information display propaganda of economic management on six sides according to actual demands, the workers can rotate a threaded rod when needing to turn over the display boards, the threaded rod can drive a limit baffle when rotating, when the limit baffle is rotated to a position where the display boards are not blocked, the workers can push the display boards to turn over the display boards, the threaded rod is rotated after turning over to limit the display boards, the turnover type double-sided display mechanism improves the practicability of a device main body, and the users can display different display information on different display sides, so that classified display is achieved;
(5) the economic management information classified display propaganda display rack is provided with the light supplementing mechanism, the external structure of the mounting block and the internal structure of the clamping groove are in special-shaped structures, the LED light supplementing plate is clamped in the clamping groove through the mounting block, relevant workers can move the LED light supplementing plate to a proper position when needed and then control the LED lamp to start working through a switch, the display surface can be illuminated after the LED lamp starts working, meanwhile, the LED light supplementing plate is powered by the power storage box, the workers only need to regularly charge the LED light supplementing plate through a power supply interface, the light supplementing mechanism improves the functionality of the device main body, and illumination can be provided for the display plate when ambient light is poor;
(6) this economic management information classification display publicity exhibition frame, through setting up regulation supporting mechanism, the device main part is overlapped on the slide bar through activity sleeve piece, the staff can become flexible the gim peg when needs, the gim peg is not hard up the back, the staff can reciprocate the device main part, it can to screw the gim peg again after moving to suitable position to treat the device main part, the inside of device base still is equipped with firm sucking disc simultaneously, firm sucking disc is equipped with four altogether, the staff is placing the device and is pressing firm sucking disc to ground can improve the land fertility of grabbing of device base after suitable position, the device main part has been avoided overturning in the use by accident, regulation supporting mechanism has improved the flexibility of device main part, made things convenient for the staff to come adjusting device according to actual demand.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the connecting column and the base of the device of the present invention;
FIG. 3 is a schematic view of the back side of the device body according to the present invention;
FIG. 4 is an enlarged schematic view of the structure at the position A of the present invention;
FIG. 5 is an enlarged view of the structure of the present invention at B;
FIG. 6 is an enlarged view of the structure of the present invention at the position C.
In the figure: 1. a device main body; 2. a hollow cavity; 3. a first display board; 4. a movable shaft; 5. a threaded rod; 6. a limit baffle; 7. a second display board; 8. a third display board; 9. a card slot; 10. mounting blocks; 11. an LED light supplementing plate; 12. connecting blocks; 13. a power interface; 14. an electricity storage box; 15. connecting the bottom plate; 16. a movable sleeve block; 17. a slide bar; 18. connecting columns; 19. positioning bolts; 20. a device base; 21. stabilizing the sucker; 22. an auxiliary rotation block; 23. a temporary storage groove; 24. and adjusting the supporting block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: economic management information classified display propaganda exhibition frame includes: 1. a device main body; 2. a hollow cavity; 3. a first display board; 4. a movable shaft; 5. a threaded rod; 6. a limit baffle; 7. a second display board; 8. a third display board; 9. a card slot; 10. mounting blocks; 11. an LED light supplementing plate; 12. connecting blocks; 13. a power interface; 14. an electricity storage box; 15. connecting the bottom plate; 16. a movable sleeve block; 17. a slide bar; 18. connecting columns; 19. positioning bolts; 20. a device base; 21. stabilizing the sucker; 22. an auxiliary rotation block; 23. a temporary storage groove; 24. a hollow cavity 2 is connected on one side of the surface of the device main body 1 in a penetrating way, a first display board 3 is movably connected inside the hollow cavity 2, a movable shaft 4 is movably connected at the middle part of the top of the first display board 3, wherein,
the outer wall of the threaded rod 5 is fixedly connected with an auxiliary rotating block 22, the cross section of the auxiliary rotating block 22 is rectangular, the auxiliary rotating block 22 is arranged to provide a force application point for related workers, workers can hold the auxiliary rotating block 22 when needing to rotate the threaded rod 5 without using other auxiliary tools, one side of the connecting bottom plate 15 is embedded and connected with a temporary storage groove 23, the cross section of the temporary storage groove 23 is rectangular, a storage space is arranged inside the temporary storage groove 23 by arranging the temporary storage groove 23, the related workers often need to use pens in the device using process, however, the pens are very easy to lose, the workers can put the pens into the temporary storage groove 23 when not needing to use the pens, the middle part of the bottom of the connecting bottom plate 15 is fixedly connected with an adjusting support block 24, the surface of the adjusting supporting block 24 is provided with a cushion, the adjusting supporting block 24 is arranged, related workers can support the adjusting supporting block 24 to move the device main body 1 when adjusting the height of the device main body 1, and the cushion on the surface of the adjusting supporting block 24 can protect the hands of the workers.
Preferably, the hollow cavity 2 on one side of the surface of the device body 1, the first display board 3 inside the hollow cavity 2, the movable shaft 4 at the middle part of the top of the first display board 3, the threaded rod 5 at one side of the middle part of the hollow cavity 2, the limit baffle 6 at one end of the threaded rod 5, the second display board 7 at the other side of the first display board 3 and the third display board 8 at the other side of the second display board 7 jointly form a turnover type double-sided display mechanism, most of the existing economic management information display and publicity shelves are only provided with one display board, the related information can not be displayed in a classified manner, so that the device has higher limitation in the use process, through the turnover type double-sided display mechanism, the front and the back of the first display board 3, the second display board 7 and the third display board 8 can be displayed with information, related workers can perform economic management information publicity on six sides according to actual needs, rotatable threaded rod 5 when the staff needs the upset show board, threaded rod 5 can drive limit baffle 6 when rotating, and limit baffle 6 is by being revolved when not keeping off the position of show board, and the staff can promote the show board and make its upset, and rotatory threaded rod 5 makes limit baffle 6 carry on spacingly can to the show board after the upset again, and convertible two-sided show mechanism has improved the practicality of device main part, and the user of service can show different show information at the show face of difference to accomplish categorised show.
Preferably, the device comprises a clamping groove 9 at the top of the device body 1, an installation block 10 inside the clamping groove 9, an LED light supplementing plate 11 on the front side of the installation block 10, a connecting block 12 at the top of the LED light supplementing plate 11, a power supply interface 13 on the surface of the connecting block 12, and a light supplementing mechanism consisting of a power storage box 14 behind the connecting block 12, wherein the existing economic management information display propaganda display rack has poor functionality, light cannot be provided for a display surface when ambient light is poor, the light supplementing mechanism is arranged, the external structure of the installation block 10 and the internal structure of the clamping groove 9 are in a special-shaped structure, the LED light supplementing plate 11 is clamped in the clamping groove 9 through the installation block 10, relevant workers can move the LED light supplementing plate 11 to a proper position and then start to work through a switch control LED lamp when needed, the LED lamp can illuminate the display surface after starting to work, meanwhile, the LED light supplementing plate 11 is supplied with energy by the power storage box 14, and the workers only need to, the light filling mechanism improves the functionality of the device main body, and can provide illumination for the display board when ambient light is not good.
Preferably, the bottom plate 15 is connected to the bottom of the device body 1, the movable sleeve blocks 16 are connected to two sides of the bottom plate 15, the sliding rods 17 are arranged in the movable sleeve blocks 16, the connecting columns 18 are arranged at the tops of the sliding rods 17, the positioning bolts 19 are arranged on one sides of the connecting columns 18, the device base 20 is arranged at the bottom of the connecting columns 18, and the stable suckers 21 in the device base 20 jointly form an adjusting and supporting mechanism, so that the flexibility of the conventional advertising and displaying rack with economic management information display is poor, a worker cannot adjust the device according to actual requirements in the using process, inconvenience is brought to the worker, the adjusting and supporting mechanism is arranged, the device body 1 is sleeved on the sliding rods 17 through the movable sleeve blocks 16, the positioning bolts 19 can be loosened when needed, after the positioning bolts 19 are loosened, the worker can move the device body 1 up and down, and the positioning bolts 19 can be screwed after the device body 1 is moved to a proper position, meanwhile, the stable suckers 21 are further arranged inside the device base 20, the number of the stable suckers 21 is four, the worker places the device at a proper position and presses the stable suckers 21 to the ground, the ground grabbing force of the device base 20 can be improved, the device body 1 is prevented from being accidentally overturned in the using process, the flexibility of the device body is improved by adjusting the supporting mechanism, and the worker can adjust the device according to actual needs.
The working principle is as follows: when the economic management information classified display publicity display frame is used, firstly, the device main body 1 is sleeved on the sliding rod 17 through the movable sleeve block 16 by arranging the adjusting and supporting mechanism, a worker can loosen the positioning bolt 19 when necessary, after the positioning bolt 19 is loosened, the worker can move the device main body 1 up and down, after the device main body 1 is moved to a proper position, the positioning bolt 19 is screwed, meanwhile, the device base 20 is internally provided with four stable suckers 21, after the device is placed at a proper position, the stable suckers 21 are pressed to the ground by the worker, the ground gripping force of the device base 20 can be improved, the device main body 1 is prevented from being accidentally turned over in the using process, the flexibility of the device main body is improved by adjusting the supporting mechanism, the worker can conveniently adjust the device according to actual requirements, by arranging the light supplementing mechanism, the external structure of the mounting block 10 and the internal structure of the clamping groove 9 are in a special-shaped structure, the LED light supplementing plate 11 is clamped in the clamping groove 9 through the mounting block 10, relevant workers can move the LED light supplementing plate 11 to a proper position and then control the LED lamp to start working through a switch when needed, the display surface can be illuminated after the LED lamp starts working, meanwhile, the LED light supplementing plate 11 is powered by the electricity storage box 14, the workers only need to charge the LED light supplementing plate 11 through the power interface 13 regularly, the light supplementing mechanism improves the functionality of the device main body, the display plate can be illuminated when the ambient light is poor, the front and the back of the first display plate 3, the second display plate 7 and the third display plate 8 can be subjected to information display through the turnover type double-sided display mechanism, the relevant workers can perform information display and publicity of economic management on six sides according to actual requirements, the workers can rotate the threaded rod 5 when needing to turn the display plate, the threaded rod 5 can drive the limit baffle 6 when rotating, when limit baffle 6 was revolved to the position that does not keep off the show board, the staff can promote the show board and make its upset, after the upset again rotatory threaded rod 5 make limit baffle 6 carry on spacingly to the show board can, convertible two-sided show mechanism has improved the practicality of device main part, and the user of service can show different show information at the show face of difference to accomplish categorised show, the content of not making detailed description in this description belongs to the known prior art of this area professional technical personnel.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. Economic management information classified display propaganda exhibition frame, including device main part (1), well cavity (2) and first show board (3), its characterized in that: a hollow cavity (2) is connected on one side of the surface of the device main body (1) in a penetrating way, a first display board (3) is movably connected inside the hollow cavity (2), a movable shaft (4) is movably connected at the middle part of the top of the first display board (3), wherein,
one side of the middle part of the hollow cavity (2) is movably connected with a threaded rod (5), one end of the threaded rod (5) is fixedly connected with a limiting baffle (6), the other side of the first display board (3) is movably connected with a second display board (7), and the other side of the second display board (7) is movably connected with a third display board (8);
the LED light supplementing device is characterized in that a clamping groove (9) is fixedly connected to the top of the device main body (1), an installation block (10) is embedded and connected into the clamping groove (9), an LED light supplementing plate (11) is fixedly connected to the front side of the installation block (10), a connection block (12) is fixedly connected to the top of the LED light supplementing plate (11), a power interface (13) is fixedly connected to the surface of the connection block (12), and an electricity storage box (14) is fixedly connected to the rear side of the connection block (12);
the device is characterized in that the bottom of the device body (1) is fixedly connected with a connecting bottom plate (15), the bottom of the connecting bottom plate (15) is fixedly connected with a movable sleeve block (16), the inside of the movable sleeve block (16) is connected with a sliding rod (17) in a penetrating manner, the top of the sliding rod (17) is fixedly connected with a connecting column (18), one side of the connecting column (18) is embedded and connected with a positioning bolt (19), the bottom of the connecting column (18) is fixedly connected with a device base (20), and the inside of the device base (20) is embedded and connected with a stable sucker (21).
2. The economic management information classified display publicity display stand of claim 1, characterized in that: the outer wall fixedly connected with of threaded rod (5) assists rotatory piece (22), and the cross-sectional shape of assisting rotatory piece (22) is the rectangle.
3. The economic management information classified display publicity display stand of claim 1, characterized in that: one side of the connecting bottom plate (15) is embedded and connected with a temporary storage groove (23), and the cross section of the temporary storage groove (23) is rectangular.
4. The economic management information classified display publicity display stand of claim 1, characterized in that: the middle part of the bottom of the connecting bottom plate (15) is fixedly connected with an adjusting supporting block (24), and the surface of the adjusting supporting block (24) is provided with a soft cushion.
5. The economic management information classified display publicity display stand of claim 1, characterized in that: the device comprises a device body (1), a hollow cavity (2) on one side of the surface of the device body (1), a first display board (3) inside the hollow cavity (2), a movable shaft (4) at the middle part of the top of the first display board (3), a threaded rod (5) on one side of the middle part of the hollow cavity (2), a limit baffle (6) at one end of the threaded rod (5), a second display board (7) on the other side of the first display board (3), and a third display board (8) on the other side of the second display board (7) jointly form a turnover type double-sided display mechanism.
6. The economic management information classified display publicity display stand of claim 1, characterized in that: the LED light supplementing device is characterized in that a clamping groove (9) in the top of the device body (1), an installation block (10) inside the clamping groove (9), an LED light supplementing plate (11) on the front side of the installation block (10), a connecting block (12) at the top of the LED light supplementing plate (11), a power supply interface (13) on the surface of the connecting block (12) and an electricity storage box (14) behind the connecting block (12) jointly form a light supplementing mechanism.
7. The economic management information classified display publicity display stand of claim 1, characterized in that: the device comprises a connecting bottom plate (15) at the bottom of a device body (1), movable sleeve blocks (16) on two sides of the bottom of the connecting bottom plate (15), a sliding rod (17) inside the movable sleeve blocks (16), a connecting column (18) at the top of the sliding rod (17), a positioning bolt (19) on one side of the connecting column (18), a device base (20) at the bottom of the connecting column (18), and a stable sucker (21) inside the device base (20) jointly form an adjusting and supporting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110543456.2A CN113284439A (en) | 2021-05-19 | 2021-05-19 | Economic management information classified display propaganda display rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110543456.2A CN113284439A (en) | 2021-05-19 | 2021-05-19 | Economic management information classified display propaganda display rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113284439A true CN113284439A (en) | 2021-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110543456.2A Withdrawn CN113284439A (en) | 2021-05-19 | 2021-05-19 | Economic management information classified display propaganda display rack |
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| Country | Link |
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| CN (1) | CN113284439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113796679A (en) * | 2021-09-22 | 2021-12-17 | 河北环境工程学院 | Think political affairs education and give lessons with picture hanging device |
-
2021
- 2021-05-19 CN CN202110543456.2A patent/CN113284439A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113796679A (en) * | 2021-09-22 | 2021-12-17 | 河北环境工程学院 | Think political affairs education and give lessons with picture hanging device |
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Application publication date: 20210820 |