CN108357259A - A kind of environmental protection blackboard for education - Google Patents
A kind of environmental protection blackboard for education Download PDFInfo
- Publication number
- CN108357259A CN108357259A CN201810423681.0A CN201810423681A CN108357259A CN 108357259 A CN108357259 A CN 108357259A CN 201810423681 A CN201810423681 A CN 201810423681A CN 108357259 A CN108357259 A CN 108357259A
- Authority
- CN
- China
- Prior art keywords
- blackboard
- fixedly connected
- bar shaped
- dust
- automatically controlled
- 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- Withdrawn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
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
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
- A47B97/04—Easels or stands for blackboards or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/02—Blackboard or slate cleaning devices with means for absorbing the chalk dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
Abstract
The invention discloses a kind of environmentally friendly blackboard for education, including a pair of of bar shaped mounting plate, it is fixedly connected with rail plate at each bar shaped mounting plate front side surface center, it is mounted on rectangular shaped slider on each rail plate, a pair of rectangular shaped slider front side surface is fixedly connected with bar shaped dust-absorbing box, bar shaped dust-absorbing box lower surface is fixedly connected with blackboard fixed frame at center, blackboard body is embedded in the blackboard fixed frame, blackboard body rear side surface lower end is fixedly connected with the automatically controlled Telescopic Fixed strut that telescopic end is horizontal direction, the telescopic end of the automatically controlled Telescopic Fixed strut, which is fixedly connected with, frictionally secures block, upper surface is equipped with micro-cleaner in the bar shaped dust-absorbing box.The invention has the advantages that structure novel, is easily installed, be conducive to adjust height, facilitate suction ash environmental protection, cleared up convenient for dust, contribute to Automatic erasing blackboard, improve convenience, use value is high.
Description
Technical field
The present invention relates to environmental supplies technical field, especially a kind of environmentally friendly blackboard for education.
Background technology
Blackboard be one can be with the plane of repeated writing, plate face is hard, is chiefly used in imparting knowledge to students.Mostly black, blackish green and white
Color generally uses chalk-writing plate face, then blackboard eraser is utilized to wipe, is conducive to Reusability.
Although patent 201420427930.0 can reduce dust to a certain extent, be inconvenient to handle dust, and
Blackboard is not easy to adjust height, influences teacher and teaches uses, in addition ensures Automatic erasing blackboard, and less teaching job is contributed to bear
Load.
Blackboard structure in the prior art is simple, is typically secured to classroom wall surface, since blackboard is fixed, so cannot
Adjust height, very inconvenient when writing, it is that the dust that chalk generates readily diffuses into classroom in addition to erase the board, to student and
The health of teacher brings harm, so design a kind of environment friendly blackboard, ensure blackboard can timely draw dust, be convenient for simultaneously
Dust clear up, be in addition conducive to adjust height, and can Automatic erasing blackboard, mitigate the labour burden of teaching job, therefore
It is necessary that the present apparatus, which is arranged,.
Invention content
The purpose of the present invention is to solve the above problems, devise a kind of environmentally friendly blackboard for education.
Realize above-mentioned purpose the technical scheme is that, a kind of environmental protection blackboard for education, including a pair of of bar shaped mounting plate, often
It has been fixedly connected with rail plate at a bar shaped mounting plate front side surface center, has been mounted on each rail plate
Rectangular shaped slider, a pair of rectangular shaped slider front side surface are fixedly connected with bar shaped dust-absorbing box, in bar shaped dust-absorbing box lower surface
Blackboard fixed frame is fixedly connected at the heart, the blackboard fixed frame is interior under blackboard body, the blackboard body rear side surface
End is fixedly connected with the automatically controlled Telescopic Fixed strut that telescopic end is horizontal direction, and the telescopic end of the automatically controlled Telescopic Fixed strut is solid
Surely it is connected with and frictionally secures block, upper surface is equipped with micro-cleaner, bar shaped dust-absorbing box lower surface in the bar shaped dust-absorbing box
And it is machined with a pair of of dust-absorbing mouth in front of blackboard fixed frame, ash sucking tube is embedded in each dust-absorbing mouth, described in a pair
Ash sucking tube is fixedly connected by Y type dust legs with micro-cleaner, and the blackboard fixed frame front side surface lower end is fixedly connected with
Ash slot, ash slot upper surface front end are fixedly connected with horizontal sliding rail, and the horizontal sliding rail is equipped with automatically controlled sliding block, described
Automatically controlled sliding block upper surface is fixedly connected with L-type strut, and L-type strut lower surface is fixedly connected with the square to match with ash slot
Shape scraper plate, the rectangle scraper plate lower surface are fixedly connected with the wiping of bar shaped deashing, consolidate at the bar shaped dust-absorbing box front side surface center
Surely it is connected with bar shaped slideway, automatically controlled moving trolley is installed on the bar shaped slideway, the automatically controlled moving trolley front side surface is solid
Surely it is connected with fold-type strut, the fold-type strut rear side surface is fixedly connected with the bar shaped cleaning block to match with blackboard body,
The bar shaped cleaning block rear side surface is machined with blackboard eraser fixing groove, and blackboard eraser is embedded in the blackboard eraser fixing groove, described
Blackboard fixed frame left-hand face is equipped with controller, the output end of the controller by conducting wire respectively with automatically controlled Telescopic Fixed branch
The input terminal electric connection of bar, micro-cleaner, automatically controlled sliding block and automatically controlled moving trolley.
The bar shaped dust-absorbing box right lateral surface is machined with cleaning door, the bar shaped dust-absorbing box right lateral surface hinge connection have with
The protection door that cleaning door matches.
Solenoid electric valve is set on the Y types dust leg, the output end of the controller passes through conducting wire and Electromagnetic Control
The input terminal of valve is electrically connected.
The blackboard fixed frame right lateral surface is fixedly connected with promotion handle.
Each described ash sucking tube one end has been fixedly connected with conial dust hood.
Each bar shaped mounting plate upper surface both ends are machined with mounting hole, embedded with fixation in each mounting hole
Screw.
A kind of environmentally friendly blackboard for education made using technical scheme of the present invention, structure novel are easily installed, are conducive to adjust
Section height facilitates suction ash environmental protection, is cleared up convenient for dust, contribute to Automatic erasing blackboard, improves convenience, and use value is high.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of environmentally friendly blackboard for education of the present invention；
Fig. 2 is a kind of front view of environmentally friendly blackboard for education of the present invention；
Fig. 3 is a kind of vertical view of environmentally friendly blackboard for education of the present invention；
In figure, 1, bar shaped mounting plate；2, rail plate；3, rectangular shaped slider；4, bar shaped dust-absorbing box；5, blackboard fixed frame；6、
Blackboard body；7, automatically controlled Telescopic Fixed strut；8, block is frictionally secured；9, micro-cleaner；10, ash sucking tube；11, ash slot；12、
Horizontal sliding rail；13, automatically controlled sliding block；14, L-type strut；15, rectangle scraper plate；16, bar shaped deashing is wiped；17, bar shaped slideway；18, automatically controlled
Moving trolley；19, fold-type strut；20, bar shaped cleaning block；21, blackboard eraser；22, controller；23, door is protected；24, electromagnetism control
Valve processed；25, handle is pushed；26, conial dust hood；27, Y types dust leg；28, fixing screws.
Specific implementation mode
The present invention is specifically described below in conjunction with the accompanying drawings, as shown in Figs. 1-3, a kind of environmental protection blackboard for education, including one
To bar shaped mounting plate 1, it has been fixedly connected with rail plate 2 at each 1 front side surface center of the bar shaped mounting plate, it is each described
Rectangular shaped slider 3 is mounted on rail plate 2, a pair of 3 front side surface of rectangular shaped slider is fixedly connected with bar shaped dust-absorbing box 4,
It is fixedly connected with blackboard fixed frame 5 at 4 lower surface center of the bar shaped dust-absorbing box, blackboard sheet is embedded in the blackboard fixed frame 5
Body 6,6 rear side surface lower end of the blackboard body are fixedly connected with the automatically controlled Telescopic Fixed strut 7 that telescopic end is horizontal direction, institute
The telescopic end for stating automatically controlled Telescopic Fixed strut 7 is fixedly connected with and frictionally secures block 8, and upper surface is equipped in the bar shaped dust-absorbing box 4
Micro-cleaner 9,4 lower surface of bar shaped dust-absorbing box and is machined with a pair of of dust-absorbing mouth, Mei Gesuo positioned at the front of blackboard fixed frame 5
It states and is embedded with ash sucking tube 10 in dust-absorbing mouth, a pair of ash sucking tube 10 is fixed by Y types dust leg 27 and micro-cleaner 9 to be connected
It connects, 5 front side surface lower end of the blackboard fixed frame is fixedly connected with ash slot 11, and 11 upper surface front end of the ash slot, which is fixed, to be connected
It is connected to horizontal sliding rail 12, the horizontal sliding rail 12 is equipped with automatically controlled sliding block 13, and 13 upper surface of automatically controlled sliding block is fixedly connected with L
Type strut 14,14 lower surface of L-type strut are fixedly connected with the rectangle scraper plate 15 to match with ash slot 11, and the rectangle is scraped
15 lower surface of plate is fixedly connected with bar shaped deashing and wipes 16, and the bar shaped dust-absorbing box is fixedly connected with bar shaped at 4 front side surface center
Slideway 17 is equipped with automatically controlled moving trolley 18 on the bar shaped slideway 17, and 18 front side surface of automatically controlled moving trolley, which is fixed, to be connected
It is connected to fold-type strut 19,19 rear side surface of fold-type strut is fixedly connected with the bar shaped cleaning block to match with blackboard body 6
20,20 rear side surface of bar shaped cleaning block is machined with blackboard eraser fixing groove, and blackboard eraser is embedded in the blackboard eraser fixing groove
21,5 left-hand face of blackboard fixed frame is equipped with controller 22, the output end of the controller 22 by conducting wire respectively with it is automatically controlled
The input terminal electric connection of Telescopic Fixed strut 7, micro-cleaner 9, automatically controlled sliding block 13 and automatically controlled moving trolley 18；The bar shaped
4 right lateral surface of dust-absorbing box is machined with cleaning door, and 4 right lateral surface hinge connection of the bar shaped dust-absorbing box has to match with cleaning door
Protect door 23；Be set with solenoid electric valve 24 on the Y types dust leg 27, the output end of the controller 22 by conducting wire with
The input terminal of solenoid electric valve 24 is electrically connected；5 right lateral surface of blackboard fixed frame, which is fixedly connected with, pushes handle 25；Each
10 one end of the ash sucking tube has been fixedly connected with conial dust hood 26；Each 1 upper surface both ends of the bar shaped mounting plate process
There is mounting hole, fixing screws 28 are embedded in each mounting hole.
The characteristics of the present embodiment is that a pair of of bar shaped mounting plate 1 is conducive to blackboard sheet convenient for blackboard body 6 is fixedly mounted
Body 6 is fixed on classroom metope, and the rectangular shaped slider 3 on rail plate 2 is conducive to slide up and down, and is conducive to that blackboard body 6 is driven to adjust
Height and position is saved, plate face is write convenient for teacher, bar shaped dust-absorbing box 4 is conducive to bearing micro dust catcher 9, while being conducive to fixed company
Connecing blackboard fixed frame 5, blackboard fixed frame 5 for being fixedly mounted blackboard body 6, for writing words teach use by blackboard body 6,
Automatically controlled Telescopic Fixed strut 7 frictionally secures 8 fixed press of block in wall surface by telescopic action drive, and frictionally securing block 8 has
Conducive to increasing friction force, ensure that blackboard body 6 is fixed on corresponding position, when blackboard wiping, solenoid electric valve 24 has automatically opened
Ash is inhaled conducive to control, micro-cleaner 9 is connect suction ash with ash sucking tube 10 by Y types dust leg 27, prevents dust from spreading, be conducive to
Environmental purification, the automatically controlled moving trolley 18 on bar shaped slideway 17 move left and right, and are conducive to fold-type strut 19 is driven to be fixedly connected
Bar shaped cleaning block 20 moves back and forth, and keeps the blackboard eraser 21 being embedded in blackboard eraser fixing groove by the letter written with chalk on 6 surface of blackboard body
Mark is clean, reaches labor-saving effect, mitigates the work load of teacher, and ash slot 11 is horizontal convenient for collecting the dust that part is fallen
The automatically controlled sliding block 13 set on sliding rail 12 moves from left to right, and is conducive to drive the rectangle scraper plate 15 being fixedly connected on L-type strut 14
It shifts chalk dust onto ash slot 11 one end, is convenient to clean chalk dust, bar shaped deashing wipes 16 fully erased, the cleaning doors that are conducive to dust
Be conducive to clear up the dust collected in bar shaped dust-absorbing box 4, protection door 23 prevents dust from spreading, plays a protective role, and pushes handle
Hand 25 is conducive to carrying blackboard fixed frame 5 and slides up and down, to control to adjust blackboard body 6 to appropriate height, conial dust hood
26 are conducive to expand the grey area of suction, reduce the amount of dust diffusion, fixing screws 28 are fixedly mounted on wall surface convenient for device, together
When it is easy to disassemble, structure novel is easily installed, be conducive to adjust height, facilitate suction ash environmental protection, convenient for dust clear up, contribute to
Automatic erasing blackboard, improves convenience, and use value is high.
In the present embodiment, it is installed first in the present apparatus and may be programmed Series Controller 22, the type of selection control 22
Number be MAM-200, commercial power interface is set on device, the power connection end of commercial power interface and the input terminal of controller 22 are electrically connected
It connects, while the input terminal of commercial power interface and power cord being electrically connected, five leading-out terminals of the model controller 22 are passed through
Conducting wire respectively with automatically controlled Telescopic Fixed strut 7, micro-cleaner 9, automatically controlled sliding block 13, automatically controlled moving trolley 18 and solenoid electric valve
24 input terminal connection.After those skilled in the art are programmed by controller 22, the job order of the fully controllable each electrical part of system, tool
Body running principle is as follows：Convenient for blackboard body 6 is fixedly mounted, the rectangular shaped slider 3 on rail plate 2 has a pair of of bar shaped mounting plate 1
Conducive to sliding up and down, be conducive to that blackboard body 6 is driven to adjust height and position, bar shaped dust-absorbing box 4 is conducive to bearing micro dust catcher
9, blackboard body 6 is fixed on one by blackboard fixed frame 5 for blackboard body 6, blackboard body 6 to be fixedly mounted for use of teaching
When determining height, automatically controlled Telescopic Fixed strut 7, which stretches out to drive, frictionally secures 8 fixed press of block in wall surface, and frictionally securing block 8 has
Conducive to increasing friction force, when blackboard wiping, solenoid electric valve 24 automatically opens, and micro-cleaner 9 passes through Y types dust leg 27 at this time
It is connect with the ash sucking tube 10 being embedded in a pair of of dust-absorbing mouth and starts to inhale ash, the automatically controlled moving trolley 18 on bar shaped slideway 17 is from left to right
It is mobile, it drives the bar shaped cleaning block 20 that fold-type strut 19 is fixedly connected to move back and forth, keeps being embedded in blackboard eraser fixing groove black
Blackboard eraser 21 is clean by the chalk writing on 6 surface of blackboard body, and part dust falls in ash slot 11 and collects, when connecing
When the chalk dust collected in ash-pit 11 is excessive, the automatically controlled sliding block 13 on horizontal sliding rail 12 moves from left to right, and drives L-type strut 14
On the rectangle scraper plate 15 that is fixedly connected shift chalk dust onto ash slot 11 one end, the bar shaped deashing of 15 lower surface of rectangle scraper plate wipes 16
It is fully erased to be conducive to dust, wherein the electric controlled sliding moves 18 inside of trolley using one piece of eight AT89S52 as control core
Power source drives special chip group, cleaning door to be conducive to clear up collection in bar shaped dust-absorbing box 4 using integrated stepper motor
Dust, protection door 23 prevent dust from spreading, and push handle 25 to be conducive to carrying blackboard fixed frame 5 and slide up and down, taper dust
Cover 26, which is conducive to expand, inhales grey area, and the fixing screws 28 being embedded in mounting hole are fixedly mounted on wall surface convenient for device.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, those skilled in the art
The principle of the present invention is embodied to some variations that some of which part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (6)
1. a kind of environmental protection blackboard for education, including a pair of of bar shaped mounting plate (1), which is characterized in that each bar shaped mounting plate (1)
It has been fixedly connected with rail plate (2) at front side surface center, rectangular shaped slider is mounted on each rail plate (2)
(3), a pair of rectangular shaped slider (3) front side surface is fixedly connected with bar shaped dust-absorbing box (4), bar shaped dust-absorbing box (4) following table
It is fixedly connected with blackboard fixed frame (5) at the center of face, blackboard body (6), the blackboard sheet are embedded in the blackboard fixed frame (5)
Body (6) rear side surface lower end is fixedly connected with the automatically controlled Telescopic Fixed strut (7) that telescopic end is horizontal direction, described automatically controlled flexible
The telescopic end of fixed strut (7), which is fixedly connected with, frictionally secures block (8), and the interior upper surface of the bar shaped dust-absorbing box (4) is equipped with miniature
Dust catcher (9), bar shaped dust-absorbing box (4) lower surface and is machined with a pair of of dust-absorbing mouth in front of the blackboard fixed frame (5), each
Ash sucking tube (10) is embedded in the dust-absorbing mouth, a pair of ash sucking tube (10) passes through Y types dust leg (27) and miniature dust absorption
Device (9) is fixedly connected, and blackboard fixed frame (5) the front side surface lower end is fixedly connected with ash slot (11), the ash slot
(11) upper surface front end is fixedly connected with horizontal sliding rail (12), and the horizontal sliding rail (12) is equipped with automatically controlled sliding block (13), described
Automatically controlled sliding block (13) upper surface is fixedly connected with L-type strut (14), and L-type strut (14) lower surface is fixedly connected with and ash
The rectangle scraper plate (15) that slot (11) matches, rectangle scraper plate (15) lower surface are fixedly connected with bar shaped deashing and wipe (16), institute
It states and is fixedly connected with bar shaped slideway (17) at bar shaped dust-absorbing box (4) front side surface center, be equipped on the bar shaped slideway (17)
Automatically controlled moving trolley (18), automatically controlled moving trolley (18) front side surface are fixedly connected with fold-type strut (19), the fold-type
Strut (19) rear side surface is fixedly connected with the bar shaped cleaning block (20) to match with blackboard body (6), the bar shaped cleaning block
(20) rear side surface is machined with blackboard eraser fixing groove, and blackboard eraser (21) is embedded in the blackboard eraser fixing groove, and the blackboard is solid
Determine frame (5) left-hand face and be equipped with controller (22), the output end of the controller (22) is stretched admittedly with automatically controlled respectively by conducting wire
The input terminal for determining strut (7), micro-cleaner (9), automatically controlled sliding block (13) and automatically controlled moving trolley (18) is electrically connected.
2. a kind of environmentally friendly blackboard for education according to claim 1, which is characterized in that table on the right side of the bar shaped dust-absorbing box (4)
Face is machined with cleaning door, and bar shaped dust-absorbing box (4) the right lateral surface hinge connection has the protection door to match with cleaning door
(23)。
3. a kind of environmentally friendly blackboard for education according to claim 1, which is characterized in that be set on the Y types dust leg (27)
There are solenoid electric valve (24), the output end of the controller (22) electrically to connect by the input terminal of conducting wire and solenoid electric valve (24)
It connects.
4. a kind of environmentally friendly blackboard for education according to claim 1, which is characterized in that table on the right side of the blackboard fixed frame (5)
Face, which is fixedly connected with, pushes handle (25).
5. a kind of environmentally friendly blackboard for education according to claim 1, which is characterized in that each described ash sucking tube (10) one end is equal
It is fixedly connected with conial dust hood (26).
6. a kind of environmentally friendly blackboard for education according to claim 1, which is characterized in that on each bar shaped mounting plate (1)
Surface both ends are machined with mounting hole, and fixing screws (28) are embedded in each mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810423681.0A CN108357259A (en) | 2018-05-06 | 2018-05-06 | A kind of environmental protection blackboard for education |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810423681.0A CN108357259A (en) | 2018-05-06 | 2018-05-06 | A kind of environmental protection blackboard for education |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108357259A true CN108357259A (en) | 2018-08-03 |
Family
ID=63011625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810423681.0A Withdrawn CN108357259A (en) | 2018-05-06 | 2018-05-06 | A kind of environmental protection blackboard for education |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108357259A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109520A (en) * | 2018-10-16 | 2019-01-01 | 韩金轩 | Strengthened glass blackboard is used in a kind of teaching |
| CN109171184A (en) * | 2018-11-15 | 2019-01-11 | 荆雨萱 | A kind of student desk convenient for removing dust |
| CN110548732A (en) * | 2019-10-07 | 2019-12-10 | 南理工泰兴智能制造研究院有限公司 | Portable laser cleaning machine for stone cultural relics |
| CN112078278A (en) * | 2020-09-25 | 2020-12-15 | 山东交通职业学院 | Teaching board for education and teaching |
-
2018
- 2018-05-06 CN CN201810423681.0A patent/CN108357259A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109109520A (en) * | 2018-10-16 | 2019-01-01 | 韩金轩 | Strengthened glass blackboard is used in a kind of teaching |
| CN109109520B (en) * | 2018-10-16 | 2020-08-21 | 上海众屹科技有限公司 | Toughened glass blackboard for teaching |
| CN109171184A (en) * | 2018-11-15 | 2019-01-11 | 荆雨萱 | A kind of student desk convenient for removing dust |
| CN110548732A (en) * | 2019-10-07 | 2019-12-10 | 南理工泰兴智能制造研究院有限公司 | Portable laser cleaning machine for stone cultural relics |
| CN112078278A (en) * | 2020-09-25 | 2020-12-15 | 山东交通职业学院 | Teaching board for education and teaching |
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|---|---|---|---|
| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180803 |