CN109147586A - Outdoor advertising with cleaning function shows device - Google Patents
Outdoor advertising with cleaning function shows device Download PDFInfo
- Publication number
- CN109147586A CN109147586A CN201811249766.8A CN201811249766A CN109147586A CN 109147586 A CN109147586 A CN 109147586A CN 201811249766 A CN201811249766 A CN 201811249766A CN 109147586 A CN109147586 A CN 109147586A
- Authority
- CN
- China
- Prior art keywords
- gear
- rotating bar
- ontology
- cleaning function
- shows device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 230000009347 mechanical transmission Effects 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052754 neon Inorganic materials 0.000 description 2
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a kind of, and the outdoor advertising with cleaning function shows device, including ontology, first gear case, water storage case, driving motor, first rotating bar, there is second gear case, the inside that the bottom of first rotating bar extends to second gear case is socketed with first bevel gear, the front end face of ontology, which runs through, is equipped with third rotating bar, one end of third rotating bar is socketed with second bevel gear, second bevel gear is meshed with first bevel gear, the end of third rotating bar is fixedly installed with cleaning brush, it is set inside the body blower, the input terminal of blower is connected with blast pipe, the output end of blower is connected with air supply tube, the end of air supply tube is connected separately with two plenum chambers, heating wire is equipped with inside two plenum chambers, the side of plenum chamber is equipped with slot outlet.The present invention carries out automation cleaning to LED advertisement screen by driving motor and mechanical transmission structure, substantially increases cleaning efficiency and reduces cleaning cost, prevents security risk.
Description
Technical field
The present invention relates to advertising display technical field, specially a kind of outdoor advertising with cleaning function shows device.
Background technique
Neon light, advertising lamp box or advertising poster are a kind of important carriers of current numerous enterprises issuing advertisement information.
Neon light or advertising lamp box belong to large-scale outdoor light advertising device, and general smaller advertisements show that device is broadcast using display screen
It puts.
Advertisement is important merchandising means, in the various advertising media and ad distribution device of releasing advertisements, extensively
The medium that board is a kind of transmitting of outdoor information is accused, billboard is many kinds of in modern metropolitan cities, eye-catching in order to accomplish, allows people
It is remote to can see, and billboard is made very high, but since long-time is placed outdoors, rear advertising board surface of exposing to the sun and rain
Many dirts can be deposited.However, needing to clean after LED advertisement screen long-time use to keep display brightness, but now clear
Most of work is washed based on manually cleaning, artificial cleaning efficiency is low, costly, and high altitude operation difficulty is high and dangerous, often needs
High altitude operation is wanted to be cleaned, artificial cleaning not only increases cost of labor, and there is also some potential safety problemss.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the existing defects, provides a kind of outdoor advertising with cleaning function
It shows device, can effectively solve the problems, such as background technique.
To achieve the above object, the invention provides the following technical scheme: the outdoor advertising with cleaning function shows device,
Including ontology, the top of the ontology is equipped with first gear case, and the top of the first gear case is set side by side there are two support frame,
The top of support frame as described above is equipped with shaft, and the surface of the shaft is equipped with the first fixed link and the second fixed link, and described first is solid
The end of fixed pole and the second fixed link is connected with the same water storage case, and the front end of the water storage case is equipped with outlet pipe, and described
The inside top of body is fixed with driving motor, and the output sleeve of the driving motor is connected to first gear, the driving motor
Side is equipped with the first rotating bar, and the upper end of first rotating bar is socketed with second gear, the second gear and first gear
It is meshed, the top of first rotating bar, which extends in the first gear case to be fixedly installed with through the bodies top, to be turned
Wheel, the top side of the runner are hinged with connecting rod, and the end of the connecting rod is hinged with the two-sided rack, the two-sided rack
Two sides be symmetrically arranged with the second rotating bar, be socketed with third gear in two second rotating bars, the third gear with
The two-sided rack is meshed, and the top of second rotating bar is fixedly connected with the bottom of support frame as described above, the ontology
Side inner wall is fixed with second gear case, and the inside that the bottom of first rotating bar extends to the second gear case is socketed with
First bevel gear, the front end face of the ontology, which runs through, is equipped with third rotating bar, and one end of the third rotating bar is socketed with second
Bevel gear, the second bevel gear are meshed with the first bevel gear, and the end of the third rotating bar is fixedly installed with clearly
Clean brush, described to be set inside the body blower, the input terminal of the blower is connected with blast pipe, the output end connection of the blower
There is air supply tube, the end of the air supply tube is connected separately with two plenum chambers, is equipped with heating wire inside two plenum chambers,
The side of the plenum chamber is equipped with slot outlet, sets that there are two LED advertisement screen, the cleaning brush between two plenum chambers
Between two LED advertisement screens.
Angle as a preferred technical solution of the present invention, between first fixed link and second fixed link
For obtuse angle.
As a preferred technical solution of the present invention, the front end of the first gear case is equipped with hang plate, the inclination
The corner dimension of plate and horizontal plane is between 30 degree to 60 degree.
As a preferred technical solution of the present invention, the two sides of the LED advertisement screen are symmetrically arranged with LED lamp post, described
LED lamp post is set between the plenum chamber and LED advertisement screen.
As a preferred technical solution of the present invention, the top of the first gear case is set in the side of support frame as described above
There is hydraulic telescopic rod, the top of the hydraulic telescopic rod is equipped with fixed pipe sleeve, the fixed pipe sleeve and the second fixed link mistake
It is full of cooperation.
As a preferred technical solution of the present invention, the water outlet pipe part is equipped with automatically controlled nozzle.
As a preferred technical solution of the present invention, diameter of the length of the connecting rod greatly with the runner.
As a preferred technical solution of the present invention, the end of the two-sided rack and the first gear chamber interior wall it
Between be equipped with telescopic rod.
Compared with prior art, the beneficial effects of the present invention are: adjusting water storage case and level by hydraulic telescopic rod first
Angle between face enables automatically controlled nozzle that water to be sprayed directly on in LED advertisement screen, then, starts driving motor, driving motor
Connection is engaged with second gear by first gear and drives the rotation of the first rotating bar, and the first rotating bar drives first gear case
Internal runner rotation, runner drive the two-sided rack front-rear reciprocation movement, the two-sided rack and then drive two by bar that is articulated and connected
The third gear of side is rotated clockwise and is rotated back and forth counterclockwise, third gear the second rotating bar reciprocating rotary of drive, and second turn
Lever drives support frame to swing back and forth, and then automatically controlled nozzle is enable to expand spray angle, increases spray area, the second rotating bar
Bottom engage with second bevel gear by first bevel gear, drive third rotating bar to rotate, outside the drive of third rotating bar
Cleaning brush rotates on the surface of LED advertisement screen, cleans to it, after cleaning, closes driving motor and automatically controlled nozzle, beats
Blow in machine and heating wire, and the air of electric-heating-wire-heating is sent into plenum chamber by air supply tube by blower, and plenum chamber is blown by bar shaped
Mouth blows away hot wind alignment LED advertisement screen, dries to LED advertisement screen, and the present invention passes through driving motor and machine driving knot
Structure carries out automation cleaning to LED advertisement screen, substantially increases cleaning efficiency and reduces cleaning cost, has prevented security risk.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is sectional view of the invention；
Fig. 3 is the attachment structure schematic diagram of water storage case of the present invention；
Fig. 4 is the internal structure cross-sectional view of second gear case of the present invention；
Fig. 5 is the internal structure top view of second gear case of the present invention.
In figure: 1, ontology；2, first gear case；3, support frame；4, shaft；5, the first fixed link；6, the second fixed link；7,
Water storage case；8, outlet pipe；9, driving motor；10, first gear；11, the first rotating bar；12, second gear；13, runner；14,
Connecting rod；15, the two-sided rack；16, the second rotating bar；17, third gear；18, first bevel gear；19, third rotating bar；20,
Second bevel gear；21, cleaning brush；22, blower；23, blast pipe；24, air supply tube；25, plenum chamber；26, heating wire；27, bar shaped
Air outlet；28, LED advertisement screen；29, hang plate；30, LED lamp post；31, hydraulic telescopic rod；32, fixed pipe sleeve；33, automatically controlled spray
Mouth；34, telescopic rod；35, second gear case.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-5, the present invention provides a kind of technical solution: the outdoor advertising with cleaning function shows device, packet
Ontology 1 is included, the top of ontology 1 is equipped with first gear case 2, and the top of first gear case 2 sets side by side there are two support frame 3, supports
The top of frame 3 is equipped with shaft 4, and the surface of shaft 4 is equipped with the first fixed link 5 and the second fixed link 6, the first fixed link 5 and second
The end of fixed link 6 is connected with the same water storage case 7, and the front end of water storage case 7 is equipped with outlet pipe 8, and the inside top of ontology 1 is solid
Surely there is driving motor 9, the output sleeve of driving motor 9 is connected to first gear 10, and the side of driving motor 9 is equipped with the first rotating bar
11, the upper end of the first rotating bar 11 is socketed with second gear 12, and second gear 12 is meshed with first gear 10, the first rotating bar
11 top extends in first gear case 2 at the top of ontology 1 and is fixedly installed with runner 13, and the top side of runner 13 is hinged
There is connecting rod 14, the end of connecting rod 14 is hinged with the two-sided rack 15, and the two sides of the two-sided rack 15 are symmetrically arranged with the second rotating bar
16, third gear 17 is socketed in two the second rotating bars 16, and third gear 17 is meshed with the two-sided rack 15, the second rotation
The top of bar 16 is fixedly connected with the bottom of support frame 3, and the side inner wall of ontology 1 is fixed with second gear case 35, the first rotation
The inside that the bottom of bar 11 extends to second gear case 35 is socketed with first bevel gear 18, and the front end face of ontology 1, which runs through, is equipped with the
Three rotating bars 19, one end of third rotating bar 19 are socketed with second bevel gear 20, second bevel gear 20 and 18 phase of first bevel gear
Engagement, the end of third rotating bar 19 are fixedly installed with cleaning brush 21, and the inside of ontology 1 is equipped with blower 22, the input of blower 22
End is connected with blast pipe 23, and the output end of blower 22 is connected with air supply tube 24, and the end of air supply tube 24 is connected separately with two and send
Air compartment 25, heating wire 26 is equipped with inside two plenum chambers 25, and the side of plenum chamber 25 is equipped with slot outlet 27, two air-supplies
It is set between room 25 there are two LED advertisement screen 28, cleaning brush 21 is set between two LED advertisement screens 28.
Angle between first fixed link 5 and the second fixed link 6 is obtuse angle, and the front end of first gear case 2 is equipped with hang plate
29, between 30 degree to 60 degree, the two sides of LED advertisement screen 28 are symmetrically arranged with the corner dimension of hang plate 29 and horizontal plane
LED lamp post 30, LED lamp post 30 are set between plenum chamber 25 and LED advertisement screen 28, and the top of first gear case 2 is in support frame 3
Side is equipped with hydraulic telescopic rod 31, and the top of hydraulic telescopic rod 31 is equipped with fixed pipe sleeve 32, fixed pipe sleeve 32 and the second fixed link 6
Interference fit, is equipped with automatically controlled nozzle 33 at outlet pipe 8, diameter of the length of connecting rod 14 greatly with runner 13, the two-sided rack 15
Telescopic rod 34 is equipped between 2 inner wall of end and first gear case.
The working principle of the invention and process for using: in use, adjusting water storage case 7 and water by hydraulic telescopic rod 31 first
Angle between plane enables automatically controlled nozzle 33 that water to be sprayed directly on in LED advertisement screen 28, then, starts driving motor 9,
Driving motor 9 is engaged connection with second gear 12 by first gear 10 and drives the rotation of the first rotating bar 11, the first rotation
Bar 11 drives the runner 13 inside first gear case 2 to rotate, and runner 13 drives 15 front and back of the two-sided rack by bar that is articulated and connected 14
It moves back and forth, the third gear 17 of the two-sided rack 15 and then drive two sides is rotated clockwise and rotated back and forth counterclockwise, third tooth
Wheel 17 drives 16 reciprocating rotary of the second rotating bar, and the second rotating bar 16 drives support frame 3 to swing back and forth, and then makes automatically controlled nozzle 33
Spray angle can be expanded, increase spray area, the bottom of the second rotating bar 16 passes through first bevel gear 18 and second bevel gear
20 engagements, drive third rotating bar 19 to rotate, and third rotating bar 19 drives external cleaning brush 21 on the surface of LED advertisement screen 28
Rotation, cleans it, after cleaning, closes driving motor 9 and automatically controlled nozzle 33, opens blower 22 and heating wire 26,
Blower 22 is sent into plenum chamber 25 by the air that air supply tube 24 heats heating wire 26, and plenum chamber 25 will by slot outlet 27
Hot wind alignment LED advertisement screen 28 is blown away, and is dried to LED advertisement screen 28, and the present invention passes through driving motor 9 and machine driving knot
Structure carries out automation cleaning to LED advertisement screen 28, substantially increases cleaning efficiency and reduces cleaning cost, has prevented safe hidden
Suffer from.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. the outdoor advertising with cleaning function shows device, including ontology (1), which is characterized in that the top of the ontology (1)
Equipped with first gear case (2), the top of the first gear case (2) is set side by side there are two support frame (3), support frame as described above (3)
Top be equipped with shaft (4), the surface of the shaft (4) is equipped with the first fixed link (5) and the second fixed link (6), described first
The end of fixed link (5) and the second fixed link (6) is connected with the same water storage case (7), and the front end of the water storage case (7) is equipped with
The inside top of outlet pipe (8), the ontology (1) is fixed with driving motor (9), the output shaft socket of the driving motor (9)
Have first gear (10), the side of the driving motor (9) is equipped with the first rotating bar (11), first rotating bar (11) it is upper
End cap is connected to second gear (12), and the second gear (12) is meshed with first gear (10), first rotating bar (11)
Top extend at the top of the ontology (1) in the first gear case (2) and be fixedly installed with runner (13), the runner
(13) top side is hinged with connecting rod (14), and the end of the connecting rod (14) is hinged with the two-sided rack (15), described double
The two sides of face rack gear (15) are symmetrically arranged with the second rotating bar (16), are socketed with third tooth on two second rotating bars (16)
Take turns (17), the third gear (17 are meshed with the two-sided rack (15), the top of second rotating bar (16) with it is described
The bottom of support frame (3) is fixedly connected, and the side inner wall of the ontology (1) is fixed with second gear case (35), and described first turn
The inside that the bottom of lever (11) extends to the second gear case (35) is socketed with first bevel gear (18), the ontology (1)
Front end face run through and be equipped with third rotating bar (19), one end of the third rotating bar (19) is socketed with second bevel gear (20),
The second bevel gear (20) is meshed with the first bevel gear (18), and the end of the third rotating bar (19) is fixedly mounted
Have cleaning brush (21), the inside of the ontology (1) is equipped with blower (22), and the input terminal of the blower (22) is connected with blast pipe
(23), the output end of the blower (22) is connected with air supply tube (24), and the end of the air supply tube (24) is connected separately with two
Plenum chamber (25), two plenum chambers (25) are internal to be equipped with heating wire (26), and the side of the plenum chamber (25) is equipped with item
Shape air outlet (27) is set between two plenum chambers (25) there are two LED advertisement screen (28), and the cleaning brush (21) is set to two
Between a LED advertisement screen (28).
2. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: described first is fixed
Angle between bar (5) and second fixed link (6) is obtuse angle.
3. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the first gear
The front end of case (2) is equipped with hang plate (29), the corner dimension of the hang plate (29) and horizontal plane 30 degree to 60 degree it
Between.
4. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the LED advertisement
The two sides of screen (28) are symmetrically arranged with LED lamp post (30), and the LED lamp post (30) is set to the plenum chamber (25) and LED advertisement screen
(28) between.
5. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the first gear
The top of case (2) is equipped with hydraulic telescopic rod (31) in the side of support frame as described above (3), sets at the top of the hydraulic telescopic rod (31)
Have fixed pipe sleeve (32), the fixed pipe sleeve (32) and second fixed link (6) are interference fitted.
6. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the outlet pipe
(8) automatically controlled nozzle (33) are equipped at.
7. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the connecting rod
(14) diameter of the length greatly with the runner (13).
8. the outdoor advertising with cleaning function shows device according to claim 1, it is characterised in that: the two-sided rack
(15) telescopic rod (34) are equipped between end and the first gear case (2) inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811249766.8A CN109147586A (en) | 2018-10-25 | 2018-10-25 | Outdoor advertising with cleaning function shows device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811249766.8A CN109147586A (en) | 2018-10-25 | 2018-10-25 | Outdoor advertising with cleaning function shows device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109147586A true CN109147586A (en) | 2019-01-04 |
Family
ID=64809522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811249766.8A Withdrawn CN109147586A (en) | 2018-10-25 | 2018-10-25 | Outdoor advertising with cleaning function shows device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109147586A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712524A (en) * | 2019-02-18 | 2019-05-03 | 长沙伯劳智能科技有限公司 | A kind of electronic bill-board dust cleaning plant |
| CN109967413A (en) * | 2019-04-22 | 2019-07-05 | 杭州润笙包装制品有限公司 | A kind of semiconductor light-emitting-diode color lamp |
| CN110095931A (en) * | 2019-05-09 | 2019-08-06 | 广东广凌信息科技股份有限公司 | Projector light bulb fine-grained management system |
| CN111312117A (en) * | 2020-03-02 | 2020-06-19 | 山东百特展览工程有限公司 | Multimedia three-dimensional imaging display wall |
| CN112967624A (en) * | 2021-01-29 | 2021-06-15 | 安徽青云峡旅游发展有限公司 | Multifunctional outdoor display device for travel consultation and use method thereof |
| CN113458050A (en) * | 2021-07-13 | 2021-10-01 | 深圳市本广德科技有限公司 | Over-and-under type has clean function's advertisement to adjust and presss from both sides |
| CN113823205A (en) * | 2021-09-22 | 2021-12-21 | 河北环境工程学院 | Think multi-angle broadcaster of political affairs education usefulness |
-
2018
- 2018-10-25 CN CN201811249766.8A patent/CN109147586A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712524A (en) * | 2019-02-18 | 2019-05-03 | 长沙伯劳智能科技有限公司 | A kind of electronic bill-board dust cleaning plant |
| CN109967413A (en) * | 2019-04-22 | 2019-07-05 | 杭州润笙包装制品有限公司 | A kind of semiconductor light-emitting-diode color lamp |
| CN110095931A (en) * | 2019-05-09 | 2019-08-06 | 广东广凌信息科技股份有限公司 | Projector light bulb fine-grained management system |
| CN111312117A (en) * | 2020-03-02 | 2020-06-19 | 山东百特展览工程有限公司 | Multimedia three-dimensional imaging display wall |
| CN111312117B (en) * | 2020-03-02 | 2021-07-27 | 山东百特展览工程有限公司 | Multimedia three-dimensional imaging display wall |
| CN112967624A (en) * | 2021-01-29 | 2021-06-15 | 安徽青云峡旅游发展有限公司 | Multifunctional outdoor display device for travel consultation and use method thereof |
| CN113458050A (en) * | 2021-07-13 | 2021-10-01 | 深圳市本广德科技有限公司 | Over-and-under type has clean function's advertisement to adjust and presss from both sides |
| CN113823205A (en) * | 2021-09-22 | 2021-12-21 | 河北环境工程学院 | Think multi-angle broadcaster of political affairs education usefulness |
| CN113823205B (en) * | 2021-09-22 | 2023-02-07 | 河北环境工程学院 | Think multi-angle broadcaster of political affairs education usefulness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190104 |
|
| WW01 | Invention patent application withdrawn after publication |