CN112120424A - Mechanical type book management full-automatic reading rack - Google Patents
Mechanical type book management full-automatic reading rack Download PDFInfo
- Publication number
- CN112120424A CN112120424A CN202011082348.1A CN202011082348A CN112120424A CN 112120424 A CN112120424 A CN 112120424A CN 202011082348 A CN202011082348 A CN 202011082348A CN 112120424 A CN112120424 A CN 112120424A
- Authority
- CN
- China
- Prior art keywords
- arm
- book
- automatic reading
- desk
- reading frame
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B63/00—Cabinets, racks or shelf units, specially adapted for storing books, documents, forms, or the like
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B23/00—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else
- A47B23/04—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else supported from table, floor or wall
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B23/00—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else
- A47B23/06—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else characterised by association with auxiliary devices, e.g. line indicators, leaf turners, lampholders, book or page holders
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B83/00—Combinations comprising two or more pieces of furniture of different kinds
- A47B83/04—Tables combined with other pieces of furniture
- A47B83/045—Tables combined with cabinets
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
- B65G47/901—Devices for picking-up and depositing articles or materials provided with drive systems with rectilinear movements only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
- B65G47/905—Control arrangements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B2220/00—General furniture construction, e.g. fittings
- A47B2220/0091—Electronic or electric devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0266—Control or detection relating to the load carrier(s)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tables And Desks Characterized By Structural Shape (AREA)
Abstract
The invention discloses a mechanical book management full-automatic reading frame which comprises a combined bookcase desk, wherein the combined bookcase desk comprises a bookcase and a desk, bases are arranged on two sides of the bookcase, telescopic mechanical arms are mounted on the bases, the desk is arranged on one side of the bookcase, an automatic reading frame storage groove is formed in the desktop of the desk, and a PLC intelligent controller is mounted on one side of the automatic reading frame storage groove, and relates to the technical field of education machinery. This convenient education machinery through PLC intelligent control ware, can realize the automatic books of taking, deposits books and reads books, has solved the bitter of turning over the page or leaf, has reduced the burden of cervical vertebra, has reduced the risk of myopia, and the operation is simple reliable, and simple structure is light.
Description
Technical Field
The invention belongs to the technical field of education machinery, and particularly relates to a mechanical book management full-automatic reading stand.
Background
The reading can make people more full and rich, make thought training, the state promotes, changes the quality of qi, and the expression of people is stopped, and the mode of making the best of all things. The reading can also have a wide visual field, the knowledge in the book can be said to be all around, the visual field can be widened by reading, people different from the book can be read in the reading process, such as people from different cultures or backgrounds, and the reading can help the book to know the opinion of the people and review the original prejudice. The reading can be good for the sentiment, and people feel happy when the people lose life or need help. The reading can also improve the writing level, and a plurality of graceful words and sentences can be appreciated in the reading process, so that people can learn and use for reference during writing, and make up for deficiencies.
When reading, the user often needs to hold books with two hands, particularly thick books, and the books can be folded when the user leaves the books, so that the user is inconvenient to take notes, the existing reading frame is only used for fixing the books and does not have the function of automatically turning pages, the function is relatively single, the functions of automatically taking and storing the books cannot be achieved, and meanwhile, the user does not help people with disabilities.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a mechanical book management full-automatic reading rack, which solves the problems that the existing reading rack is single in function and cannot realize automatic page turning and automatic book taking.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a full-automatic book stand of mechanical type books management, includes combination book case desk, combination book case desk includes book case and desk, the book case both sides all are equipped with the base, and all install scalable arm on the base, book case one side is equipped with the desk, and the desk desktop is equipped with automatic reading frame collection groove, install automatic reading frame on the automatic reading frame collection groove, this automatic reading frame receipts side-mounting PLC intelligent control ware.
Preferably, scalable arm includes first cardan shaft, first arm, second cardan shaft and third arm, first arm is connected first cardan shaft, and first cardan shaft connects the second arm, and this second arm connects the second cardan shaft, the third arm is connected to the second cardan shaft, and the manipulator is connected to the third arm.
Preferably, the base internally mounted has the second controller, second controller one side installation advances oil pipe and returns oil pipe, advance oil pipe and return oil pipe and set up in the centre of hydraulic pressure conversion equipment and first controller, and advance oil pipe and return oil pipe's afterbody and install on the hydraulic tank.
Preferably, books are placed in the bookcase, a book support is fixedly installed below the books, and a bookshelf code is arranged on one side of the book support.
Preferably, the automatic reading frame includes the books backup pad, turns over page or leaf pole and fixed plate, books backup pad below both sides fixed mounting has the fixed plate, and both sides the centre of fixed plate is equipped with turns over the page or leaf pole, the opposite side of books backup pad is equipped with the bracing piece, and the below of bracing piece installs the bracing piece draw-in groove.
(III) advantageous effects
The invention provides a mechanical book management full-automatic reading stand. The method has the following beneficial effects:
(1) this full-automatic book stand of mechanical type book management all is equipped with the base through the both sides of making up the book case, and all installs scalable arm on the base, and book case one side is equipped with the desk simultaneously, and the desk desktop is equipped with automatic reading frame collection groove, and installs automatic reading frame on the automatic reading frame collection groove and this automatic reading frame receipts side-mounting PLC intelligent control ware, through the PCL controller, can very convenient take books and deposit, improve people's reading interest.
(2) This full-automatic reading frame of mechanical type management of books connects first cardan shaft through first arm, and first cardan shaft connects the second arm, and the second cardan shaft is connected to this second arm, and the third arm of second cardan shaft connection simultaneously, and the manipulator is connected to the third arm, and intelligent operation need not people oneself to go to take the book on the bookshelf, the embarrassment that the book can not be taken to the eminence of reduction, has very big benefit to the disability personage simultaneously.
(3) This full-automatic reading frame of mechanical type librarray management has the second controller through base internally mounted, and second controller one side-mounting advances oil pipe and returns oil pipe, should advance oil pipe and return oil pipe setting in the centre of hydraulic pressure conversion device and first controller, and advance oil pipe and return oil pipe's afterbody and install on the hydraulic pressure case, conveniently control scalable arm.
(4) This full-automatic book stand of mechanical type library management has books through book case inside putting, and fixed mounting has books support below books, and one side of books support is equipped with the bookshelf code simultaneously, makes things convenient for the bookshelf code that people discerned and wants to easily books are taken to scalable arm.
(5) This full-automatic book stand of mechanical type management of books, books backup pad below both sides fixed mounting have a fixed plate, and both sides the centre of fixed plate is equipped with page turning rod, and the opposite side of books backup pad is equipped with the bracing piece simultaneously, and the below of bracing piece installs the bracing piece draw-in groove, can adjust the angle of books through the draw-in groove, is of value to protection eyes, reduces cervical spondylopathy's risk, simultaneously through page turning rod, has not only improved people's reading interest, has also made things convenient for the note when reading, also has very big benefit when inconvenient book that turns over.
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a top view of the present invention as a whole;
FIG. 3 is a schematic view of the telescopic robotic arm of the present invention;
fig. 4 is a schematic structural diagram of an automatic reading stand according to the present invention.
In the figure, 1-a combined bookcase desk, 2-a telescopic mechanical arm, 3-a mechanical arm, 4-a base, 5-a book, 6-a book support, 7-a bookshelf code, 8-a PLC only controller, 9-an automatic reading frame, 10-a hydraulic conversion device, 11-a first controller, 12-an oil inlet pipe, 13-an oil return pipe and 14-a hydraulic tank, 15-a second controller, 16-a bookcase, 17-a desk, 21-a first mechanical arm, 22-a first universal shaft, 23-a second mechanical arm, 24-a second universal shaft, 25-a third mechanical arm, 91-a book supporting plate, 92-a page turning rod, 93-a fixing plate, 94-an automatic reading rack storage groove, 95-a supporting rod clamping groove and 96-a supporting rod.
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. 1-4, an embodiment of the present invention provides a technical solution: the utility model provides a full-automatic reading frame of mechanical type book management, is including combination book case desk 1, combination book case desk 1 includes book case 16 and desk 17, book case 16 both sides all are equipped with base 4, and all install scalable arm 2 on the base 4, book case 16 one side is equipped with desk 17, and desk 17 desktop is equipped with automatic reading frame collection groove 94, install automatic reading frame 9 on the automatic reading frame collection groove 94, this automatic reading frame receipts 9 side-mounting PLC intelligent control ware 8, can be very convenient take the deposit to books, improve people's reading interest.
The hydraulic control system is characterized in that a second controller 15 is installed inside the base 4, an oil inlet pipe 12 and an oil return pipe 13 are installed on one side of the second controller 15, the oil inlet pipe 12 and the oil return pipe 13 are arranged in the middle 11 of the hydraulic conversion device 10 and the first controller, and the tail portions of the oil inlet pipe 12 and the oil return pipe 13 are installed on a hydraulic tank 14.
The automatic reading frame 9 comprises a book supporting plate 91, page turning rods 92 and fixing plates 93, the fixing plates 93 are fixedly mounted on two sides of the lower portion of the book supporting plate 91, the page turning rods 92 are arranged in the middles of the fixing plates 93, the supporting rods 96 are arranged on the other sides of the book supporting plate 91, supporting rod clamping grooves 95 are mounted below the supporting rods 96, the automatic reading frame is beneficial to protecting eyes and reducing risks of cervical spondylosis, meanwhile, reading interest of people is improved through the page turning rods, notes can be taken conveniently when reading, and great benefits are achieved when the books are not turned conveniently.
The utility model discloses a hydraulic oil tank, hydraulic conversion device, the middle part of advancing oil pipe and time oil pipe is installed to first controller, be used for controlling and mediating the speed of oil feed and oil discharge, the oil inlet department that advances oil pipe sets up a filter, be used for filtering the hydraulic oil impurity that gets into in the oil pipe, the second controller is controlling opening and shutting of mechanical grab under power drive, simultaneously, be equipped with hydraulic oil in the hydraulic tank, hydraulic oil in the hydraulic tank gets into hydraulic conversion device through the oil feed, turn into the drive power of drive scalable arm and manipulator with hydraulic power in hydraulic conversion device, scalable arm upwards lifts under the effect of drive power, hydraulic oil after the conversion gets into hydraulic tank cyclic utilization again through time oil pipe, first controller is installed in the centre of advancing oil pipe and time oil pipe, be used for.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a full-automatic reading frame of mechanical type book management which characterized in that: including combination book case desk (1), combination book case desk (1) is including book case (16) and desk (17), book case (16) both sides all are equipped with base (4), and all install scalable arm (2) on base (4), book case (16) one side is equipped with desk (17), and desk (17) desktop is equipped with automatic reading frame collection groove (94), install automatic reading frame (9) on automatic reading frame collection groove (94), this automatic reading frame (9) one side installation PLC intelligent control ware (8).
2. A mechanical book management fully automatic reading stand according to claim 1, characterized in that: scalable arm (2) include first cardan shaft (22), first arm (21), second arm (23), second cardan shaft (24) and third arm (25), first cardan shaft (22) is connected in first arm (21), and second arm (23) is connected in first cardan shaft (22), and second arm (23) is connected in this second arm (23), third arm (25) is connected in second cardan shaft (24), and manipulator (3) is connected to the third arm.
3. A mechanical book management fully automatic reading stand according to claim 1, characterized in that: base (4) internally mounted has second controller (15), second controller (15) one side installation advances oil pipe (12) and returns oil pipe (13), advance oil pipe (12) and return oil pipe (13) and set up in the centre (11) of hydraulic pressure conversion device (10) and first controller, and advance oil pipe (12) and return oil pipe (13) the afterbody and install on the hydraulic tank (14).
4. A mechanical book management fully automatic reading stand according to claim 1, characterized in that: books (5) are placed inside the bookcase (16), a book support (6) is fixedly installed below the books (5), and a bookshelf code (7) is arranged on one side of the book support (6).
5. A mechanical book management fully automatic reading stand according to claim 1, characterized in that: the automatic reading frame (9) comprises a book supporting plate (91), page turning rods (92) and fixing plates (93), the fixing plates (93) are fixedly mounted on two sides of the lower portion of the book supporting plate (91), the page turning rods (92) are arranged in the middles of the fixing plates (93) on two sides, supporting rods (96) are arranged on the other sides of the book supporting plate (91), and supporting rod clamping grooves (95) are mounted below the supporting rods (96).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011082348.1A CN112120424A (en) | 2020-10-12 | 2020-10-12 | Mechanical type book management full-automatic reading rack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011082348.1A CN112120424A (en) | 2020-10-12 | 2020-10-12 | Mechanical type book management full-automatic reading rack |
Publications (1)
Publication Number | Publication Date |
---|---|
CN112120424A true CN112120424A (en) | 2020-12-25 |
Family
ID=73844181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011082348.1A Pending CN112120424A (en) | 2020-10-12 | 2020-10-12 | Mechanical type book management full-automatic reading rack |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112120424A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112869365A (en) * | 2021-02-26 | 2021-06-01 | 慕朝芬 | Anti-myopia reading bookshelf based on magnetorheological materials |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006075448A (en) * | 2004-09-13 | 2006-03-23 | Yoshiaki Izumi | Multipurpose bookstand with writing table in combination system of book-rest board and book-rest board table |
CN204351330U (en) * | 2015-01-06 | 2015-05-27 | 郑启伟 | Desk is with reading auxiliary frame |
CN205696645U (en) * | 2016-05-19 | 2016-11-23 | 刘颖悦 | A kind of novel desk |
CN209825707U (en) * | 2019-01-09 | 2019-12-24 | 重庆市众源教学设备有限公司 | Study desk convenient for students to read |
CN110745535A (en) * | 2019-10-29 | 2020-02-04 | 南通大学 | Intelligent double-manipulator library book management shelf robot system |
CN210419078U (en) * | 2019-05-13 | 2020-04-28 | 江苏美亚环保实业有限公司 | Hydraulic support pump device |
CN211092392U (en) * | 2019-07-17 | 2020-07-28 | 杨雯景 | Library uses desk with angle modulation function is placed to books |
-
2020
- 2020-10-12 CN CN202011082348.1A patent/CN112120424A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006075448A (en) * | 2004-09-13 | 2006-03-23 | Yoshiaki Izumi | Multipurpose bookstand with writing table in combination system of book-rest board and book-rest board table |
CN204351330U (en) * | 2015-01-06 | 2015-05-27 | 郑启伟 | Desk is with reading auxiliary frame |
CN205696645U (en) * | 2016-05-19 | 2016-11-23 | 刘颖悦 | A kind of novel desk |
CN209825707U (en) * | 2019-01-09 | 2019-12-24 | 重庆市众源教学设备有限公司 | Study desk convenient for students to read |
CN210419078U (en) * | 2019-05-13 | 2020-04-28 | 江苏美亚环保实业有限公司 | Hydraulic support pump device |
CN211092392U (en) * | 2019-07-17 | 2020-07-28 | 杨雯景 | Library uses desk with angle modulation function is placed to books |
CN110745535A (en) * | 2019-10-29 | 2020-02-04 | 南通大学 | Intelligent double-manipulator library book management shelf robot system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112869365A (en) * | 2021-02-26 | 2021-06-01 | 慕朝芬 | Anti-myopia reading bookshelf based on magnetorheological materials |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN112120424A (en) | Mechanical type book management full-automatic reading rack | |
CN107731014A (en) | A kind of juvenile's English teaching remittance Graphic Panel | |
CN211669940U (en) | Psychology teaching is with propaganda display device | |
CN218996196U (en) | Show board suitable for bilingual teaching | |
CN208403628U (en) | A kind of Chinese reading frame | |
CN110367758A (en) | A kind of Paper-cut of three-dimensional display mounting frame | |
CN206370168U (en) | A kind of English teaching circulation memorize word device | |
CN206999946U (en) | A kind of multi-functional senior middle school's natural sciences reading stand | |
CN206726682U (en) | A kind of Chinese culture and propaganda action device | |
CN206961477U (en) | A kind of outdoor propaganda board of ideological education easy to use | |
CN207690412U (en) | A kind of Political Teaching publicity board | |
CN209595078U (en) | A kind of reportage publishes in instalments reading device | |
CN2218089Y (en) | Eye protector | |
CN204774174U (en) | Reading paging device | |
CN107752383A (en) | Based on the application method for reading aid | |
CN212691542U (en) | Stage lamp convenient to hide | |
CN216053444U (en) | Educational psychology teaching is with three-dimensional simulation teaching aid | |
CN210672547U (en) | Lifting liquid crystal display screen | |
CN216647569U (en) | History teaching aid | |
CN208972812U (en) | A kind of language teaching lectern robot with function of flattening | |
CN215076309U (en) | English teaching is with reading books strutting arrangement | |
CN209051196U (en) | A kind of English teaching folder | |
CN214123241U (en) | Think political affairs with teaching speech board | |
CN210988875U (en) | Book reading rack for Chinese teaching | |
CN212255926U (en) | Glasses capable of effectively preventing increase of myopia degree |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201225 |
|
RJ01 | Rejection of invention patent application after publication |