CN209326662U - A kind of Surveying Engineering auxiliary plotting board - Google Patents
A kind of Surveying Engineering auxiliary plotting board Download PDFInfo
- Publication number
- CN209326662U CN209326662U CN201920399401.7U CN201920399401U CN209326662U CN 209326662 U CN209326662 U CN 209326662U CN 201920399401 U CN201920399401 U CN 201920399401U CN 209326662 U CN209326662 U CN 209326662U
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- fixedly connected
- mounting plate
- plotting board
- upper mounting
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to Surveying Engineering technical field, and in particular to a kind of Surveying Engineering auxiliary plotting board；The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of structure be simple and convenient to operate, be high-efficient, error it is small, the auxiliary plotting board of safety and strong applicability；It mainly includes supporting leg, and supporting leg lower part is connected with supporting leg casing and pedestal, fixed steel needle is connected on supporting leg casing, is suitable for varying environment and device is fixed, and safe and reliable；Supporting leg top is connected with center sleeve, and center sleeve is connected with center slip pipe, can not be flattened again by its cooperation realization and adjust device height；It is connected with taper plummet on center sleeve, slightly flat operation can be quickly carried out by lead shape line.
Description
Technical field
The utility model belongs to Surveying Engineering technical field, and in particular to a kind of Surveying Engineering auxiliary plotting board.
Background technique
In engineering construction, the use of the surveying and mapping tools such as theodolite, total station is very universal, for before engineering construction
Accurate surveying setting-out etc. is made that important contribution；In specific measurement process, generally all need by neutralize flattening operation,
Existing auxiliary plotting board is typically all to pass through range estimation to make equipment center alignment fiducials point, and error is larger, in flattening course,
Expansion bracket length is adjusted repeatedly slightly to be put down, and is precisely flattened further according to level(l)ing bubble, complicated for operation, working efficiency is low；It is existing
There is auxiliary plotting board to be fixed on ground by tip, tip is exposed to outside, easily causes personnel to hurt in transport and use process
Evil；To adjust its height after the leveling of existing auxiliary plotting board, then needs to readjust expansion bracket length and slightly be put down, it is number
Tired, efficiency is lower；Structure is complicated for existing auxiliary plotting board, is only applicable to specific construction environment, adaptability is poor；Therefore provide one
Kind structure is simple and convenient to operate, is high-efficient, error is small, and the auxiliary plotting board of safety and strong applicability is necessary.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and provide a kind of structure be simple and convenient to operate,
It is high-efficient, error is small, the auxiliary plotting board of safety and strong applicability.
Purpose of the utility model is realized as follows: a kind of Surveying Engineering assists plotting board, it includes supporting leg, described
Supporting leg slide outside is connected with supporting leg casing, and the supporting leg casing is located at the supporting leg lower part, and supporting leg casing top is right
Side is fixedly connected with pedal, and left side is threaded with lower clamping screw, the supporting leg casing lower right in the middle part of the supporting leg casing
Side is fixedly connected with fixed steel needle, is fixedly connected with supporting leg sliding rail on the right side of the supporting leg lower part, the supporting leg bottom is hinged with down
Shaft is connected, the lower connection shaft is hinged with lower connection support, and the lower connection support is fixedly connected with support, the support
It is fixedly connected with non-slip rubber block；Connection support is fixedly connected at the top of the supporting leg, the upper connection support is hinged with
Shaft is connected, the upper connection shaft is fixedly connected with center sleeve, and the center sleeve upper left-hand is threaded with locking
Tight bolt, the center sleeve upper right are fixedly connected with hanging plate, and the hanging plate is connected with taper vertical, the center sleeve
Top be fixedly connected with platform deck；The center sleeve internal slide is connected with center slip pipe, center slip pipe top
It is fixedly connected with lower platform, the outside screw of the lower platform is connected with adjusting bolt, and the adjusting bolt passes through described lower flat
Platform, the adjusting bolt top slide are connected with upper mounting plate；The lower platform centre is fixedly connected with bulb strut, described
Bulb rotation connection is fluted at the top of bulb strut, and the groove top is fixedly connected in the middle part of the lower surface of the upper mounting plate；
Block is fixedly connected on the left of the upper mounting plate upper surface, the upper mounting plate upper surface is fixedly connected with platform sliding rail, described flat
Platform sliding rail slidably connects grip slide, and the grip slide screw top is connected with slider locking bolt；On the upper mounting plate
Surface top is connected with level(l)ing bubble, and upper mounting plate upper surface top is connected with compass.
The number of legs is set as 3.
The end of the lower clamping screw selectively presses on the outer surface of the supporting leg.
It is provided with groove on inner wall on the right side of the supporting leg casing, the supporting leg sliding rail can be slidably matched with the groove, so that
The supporting leg casing is slided up and down along the supporting leg sliding rail.
The end of the upper clamping screw selectively presses on the outer surface of the center slip pipe.
The taper vertical is hung on the hanging plate by the slot opened on the hanging plate, the hammer handle portion of the taper vertical
Divide and be wound with plumb line, described plumb line one end is connected to the hammer handle end of the taper vertical, the other end of the plumb line
It is connected on the hanging plate.
The center slip pipe is perpendicular to the lower platform and the upper mounting plate, and its axis passes through the lower platform and described
The center of upper mounting plate.
It is 3,4 or 5 that the quantity for adjusting bolt, which can be set as needed,.
The end of the slider locking bolt selectively presses on the upper surface of the upper mounting plate.
The utility model has the beneficial effects that it is quickly right can to put down taper plummet when carrying out thick flat operation for the utility model
Quasi- datum mark, and can it is whether parallel with center sleeve according to plumb line and quickly carry out auxiliary plotting board it is thick put down, do not need
Supporting leg angle is adjusted repeatedly, it is convenient and efficient；It carries out after slightly putting down and fixing supporting leg, can be adjusted according to level(l)ing bubble and adjust bolt,
It is flat that essence is carried out to upper mounting plate；Mapping equipment can be placed on upper mounting plate after carrying out accurate leveling, and by adjusting grip slide
With the fixed mapping equipment of adjusting slider clamping screw, can start to measure work after fixed；It is set in measurement process to adjustment
Standby whole height, can be by adjusting upper clamping screw, then by the height of center slip pipe adjustment upper mounting plate and lower platform, is not required to
Re-start flattening operation；Support and non-slip rubber block can be used to fix mapping auxiliary device in the flat place of topography,
By unscrewing lower clamping screw in topography complex environment, pedal is jammed on, supporting leg casing is moved down along supporting leg sliding rail, is finally made solid
Steel needle insertion ground is determined to which auxiliary plotting board be fixed；Steel needle is fixed when not in use passes through supporting leg casing and lower locking
Bolt is fixed on supporting leg lower inside, will not damage to personnel.
Detailed description of the invention
Fig. 1 is the overall structure diagram that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 2 is the top surface structure schematic diagram for the upper mounting plate that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 3 is the bottom surface structure schematic diagram for the upper mounting plate that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 4 is the structural schematic diagram in the direction A-A that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 5 is the structural schematic diagram for the detail drawing I that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 6 is the structural schematic diagram for the detail drawing II that a kind of Surveying Engineering of the utility model assists plotting board.
Fig. 7 is the top view for the detail drawing II that a kind of Surveying Engineering of the utility model assists plotting board.
In figure: 1, supporting leg 2, pedal 3, supporting leg casing 4, lower clamping screw 5, fixed steel needle 6, supporting leg sliding rail
7, lower connection shaft 8, lower connection support 9, support 10, non-slip rubber block 11, upper connection support 12, upper connection turn
Axis 13, upper clamping screw 15, platform deck 16, lower platform 17, adjusts bolt 18, is upper flat center sleeve 14
Platform 19, block 20, grip slide 21, slider locking bolt 22, platform sliding rail 23, groove 24, bulb strut
25, center slip pipe 26, hanging plate 27, taper plummet 28, level(l)ing bubble 29, compass.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Embodiment 1
As shown in figs. 1-7, a kind of Surveying Engineering assists plotting board, it includes supporting leg 1, and 1 slide outside of supporting leg connects
It is connected to supporting leg casing 3, the supporting leg casing 3 is located at 1 lower part of supporting leg, and 3 upper right of supporting leg casing is fixedly connected
There is pedal 2, the 3 middle part left side of supporting leg casing is threaded with lower clamping screw 4, fixes on the right side of 3 lower part of supporting leg casing
It is connected with fixed steel needle 5, is fixedly connected with supporting leg sliding rail 6 on the right side of 1 lower part of supporting leg, 1 bottom of supporting leg is hinged with lower company
Switch through axis 7, the lower connection shaft 7 is hinged with lower connection support 8, and the lower connection support 8 is fixedly connected with support 9, described
Support 9 is fixedly connected with non-slip rubber block 10；Connection support 11, the upper connection branch are fixedly connected at the top of the supporting leg 1
Support 11 is hinged with connection shaft 12, and the upper connection shaft 12 is fixedly connected with center sleeve 13, on the center sleeve 13
It is threaded with clamping screw 14 on the left of portion, 13 upper right of center sleeve is fixedly connected with hanging plate 26, the hanging plate
26 are connected with taper vertical 27, and the top of the center sleeve 13 is fixedly connected with platform deck 15；In the center sleeve 13
Portion slidably connects center slip pipe 25, and 25 top of center slip pipe is fixedly connected with lower platform 16, the lower platform 16 it is outer
Side, which is threaded with, adjusts bolt 17, and the adjusting bolt 17 passes through the lower platform 16,17 top slide of adjusting bolt
It is connected with upper mounting plate 18；16 centre of lower platform is fixedly connected with bulb strut 24, the 24 top ball of bulb strut
Head is rotatablely connected fluted 23, is fixedly connected in the middle part of the lower surface of the upper mounting plate 18 at the top of the groove 23；It is described flat
Block 19 is fixedly connected on the left of 18 upper surface of platform, 18 upper surface of upper mounting plate is fixedly connected with platform sliding rail 22, described flat
Platform sliding rail 22 slidably connects grip slide 20, and 20 screw top of grip slide is connected with slider locking bolt 21；It is described
18 upper surface top of upper mounting plate is connected with level(l)ing bubble 28, and the 18 upper surface top of upper mounting plate is connected with compass 29.
The utility model can put down 27 rapid alignment datum mark of taper plummet, and can be according to lead when carrying out thick flat operation
Whether vertical line is parallel with center sleeve 13 and quickly carries out the thick flat of auxiliary plotting board, does not need to adjust supporting leg angle repeatedly,
It is convenient and efficient；Slightly put down and after fixing supporting leg 1, can be adjusted according to level(l)ing bubble 28 and adjust bolt 17, to upper mounting plate 18 into
Row essence is flat；Mapping equipment can be placed on upper mounting plate 18 after carrying out accurate leveling, and by adjusting grip slide 20 and adjusted
Slider locking bolt 21 fixes mapping equipment, can start to measure work after fixed；To adjustment equipment in measurement process
Whole height, can be by adjusting upper clamping screw 14, then passes through the height that center slip pipe 25 adjusts upper mounting plate 18 and lower platform 16,
It is not required to re-start flattening operation；Support 9 and non-slip rubber block 10 can be used to make to survey and draw auxiliary device in the flat place of topography
It is fixed, by unscrewing lower clamping screw 4 in topography complex environment, jam on pedal 2, supporting leg casing 3 is along supporting leg sliding rail 6 to moving down
It is dynamic, so that fixed steel needle 5 is inserted into ground to which auxiliary plotting board be fixed；Steel needle 5 is fixed when not in use passes through branch
Leg casing 3 and lower clamping screw 4 are fixed on 1 lower inside of supporting leg, will not damage to personnel.
Embodiment 2
As shown in figs. 1-7, a kind of Surveying Engineering assists plotting board, it includes supporting leg 1, and 1 slide outside of supporting leg connects
It is connected to supporting leg casing 3, the supporting leg casing 3 is located at 1 lower part of supporting leg, and 3 upper right of supporting leg casing is fixedly connected
There is pedal 2, the 3 middle part left side of supporting leg casing is threaded with lower clamping screw 4, fixes on the right side of 3 lower part of supporting leg casing
It is connected with fixed steel needle 5, is fixedly connected with supporting leg sliding rail 6 on the right side of 1 lower part of supporting leg, 1 bottom of supporting leg is hinged with lower company
Switch through axis 7, the lower connection shaft 7 is hinged with lower connection support 8, and the lower connection support 8 is fixedly connected with support 9, described
Support 9 is fixedly connected with non-slip rubber block 10；Connection support 11, the upper connection branch are fixedly connected at the top of the supporting leg 1
Support 11 is hinged with connection shaft 12, and the upper connection shaft 12 is fixedly connected with center sleeve 13, on the center sleeve 13
It is threaded with clamping screw 14 on the left of portion, 13 upper right of center sleeve is fixedly connected with hanging plate 26, the hanging plate
26 are connected with taper vertical 27, and the top of the center sleeve 13 is fixedly connected with platform deck 15；In the center sleeve 13
Portion slidably connects center slip pipe 25, and 25 top of center slip pipe is fixedly connected with lower platform 16, the lower platform 16 it is outer
Side, which is threaded with, adjusts bolt 17, and the adjusting bolt 17 passes through the lower platform 16,17 top slide of adjusting bolt
It is connected with upper mounting plate 18；16 centre of lower platform is fixedly connected with bulb strut 24, the 24 top ball of bulb strut
Head is rotatablely connected fluted 23, is fixedly connected in the middle part of the lower surface of the upper mounting plate 18 at the top of the groove 23；It is described flat
Block 19 is fixedly connected on the left of 18 upper surface of platform, 18 upper surface of upper mounting plate is fixedly connected with platform sliding rail 22, described flat
Platform sliding rail 22 slidably connects grip slide 20, and 20 screw top of grip slide is connected with slider locking bolt 21；It is described
18 upper surface top of upper mounting plate is connected with level(l)ing bubble 28, and the 18 upper surface top of upper mounting plate is connected with compass 29.
1 quantity of supporting leg is set as 3, centered on the axis of center sleeve 13 circumferentially.
The end of the lower clamping screw 4 selectively presses on the outer surface of the supporting leg 1, by unscrewing or tightening
Lower clamping screw 4, position of the adjustable legs casing 3 on supporting leg 1, so that making fixed steel needle 5 be fixed on ground plays fixed make
With, or the side for making fixed steel needle 5 be fixed on 1 lower part of supporting leg, it is not exposed to outside, staff is damaged.
It is provided with groove on the 3 right side inner wall of supporting leg casing, the supporting leg sliding rail 6 can be slidably matched with the groove, with
Slide up and down the supporting leg casing 3 along the supporting leg sliding rail 6, so that reaching makes fixed steel needle 5 be located at 1 inside of supporting leg, not cruelly
It is exposed in air.
The end of the upper clamping screw 14 selectively presses on the outer surface of the center slip pipe 25, passes through adjusting
Clamping screw 14 can adjust the whole height of workbench, and not have to re-start flattening operation, improve work efficiency.
The taper vertical 27 is hung on the hanging plate 26 by the slot opened on the hanging plate 26, the taper vertical 27
Hammer handle part be wound with plumb line, described plumb line one end is connected to the hammer handle end of the taper vertical 27, the vertical
The other end of line is connected on the hanging plate 26, and the quick positioning datum point of plumb device can be used in initialization, is carried out thick
Flat operation, effectively reduces the complexity of operation, improves efficiency.
The center slip pipe 25 is perpendicular to the lower platform 16 and the upper mounting plate 18, and its axis passes through the lower platform
16 and the upper mounting plate 18 center, it is ensured that using the thick Heibei provincial opera of plumb device it is whole when, workbench is horizontally situated, improve
The precision of work.
It is 3,4 or 5 that the quantity for adjusting bolt 17, which can be set as needed, passes through several adjusting bolts 17
Compounding practice, and observe the position of bubble in level(l)ing bubble 28 makes upper mounting plate 18 with 24 supporting point shallow decline of bulb strut,
Achieve the purpose that accurately to level.
The end of the slider locking bolt 21 selectively presses on the upper surface of the upper mounting plate 18, slides when clamping
Block 20 is moved to appropriate location along platform sliding rail 22, after clamping plotting board, can will be clamped by adjusting slider clamping screw 21
Sliding block 20 is fixed on upper mounting plate, is finally reached the purpose of fixed plotting board.
Under specific construction environment, direction can be determined by compass 29, be convenient for measuring the progress of work.
The utility model can put down 27 rapid alignment datum mark of taper plummet, and can be according to lead when carrying out thick flat operation
Whether vertical line is parallel with center sleeve 13 and quickly carries out the thick flat of auxiliary plotting board, does not need to adjust supporting leg angle repeatedly,
It is convenient and efficient；Slightly put down and after fixing supporting leg 1, can be adjusted according to level(l)ing bubble 28 and adjust bolt 17, to upper mounting plate 18 into
Row essence is flat；Mapping equipment can be placed on upper mounting plate 18 after carrying out accurate leveling, and by adjusting grip slide 20 and adjusted
Slider locking bolt 21 fixes mapping equipment, can start to measure work after fixed；To adjustment equipment in measurement process
Whole height, can be by adjusting upper clamping screw 14, then passes through the height that center slip pipe 25 adjusts upper mounting plate 18 and lower platform 16,
It is not required to re-start flattening operation；Support 9 and non-slip rubber block 10 can be used to make to survey and draw auxiliary device in the flat place of topography
It is fixed, by unscrewing lower clamping screw 4 in topography complex environment, jam on pedal 2, supporting leg casing 3 is along supporting leg sliding rail 6 to moving down
It is dynamic, so that fixed steel needle 5 is inserted into ground to which auxiliary plotting board be fixed；Steel needle 5 is fixed when not in use passes through branch
Leg casing 3 and lower clamping screw 4 are fixed on 1 lower inside of supporting leg, will not damage to personnel；The utility model overall structure
Simply, easy to operate, it can quickly carry out to flattening operation is neutralized, work efficiency is high, and adapts to complicated landform and construction ring
Border.
Claims (9)
1. a kind of Surveying Engineering assists plotting board, it includes supporting leg (1), it is characterised in that: supporting leg (1) slide outside connects
It is connected to supporting leg casing (3), the supporting leg casing (3) is located at the supporting leg (1) lower part, supporting leg casing (3) upper right
It is fixedly connected with pedal (2), left side is threaded with lower clamping screw (4) in the middle part of the supporting leg casing (3), the supporting leg casing
(3) it is fixedly connected with fixed steel needle (5) on the right side of lower part, is fixedly connected with supporting leg sliding rail (6), institute on the right side of supporting leg (1) lower part
It states supporting leg (1) bottom and is hinged with lower connection shaft (7), the lower connection shaft (7) is hinged with lower connection support (8), under described
Connection support (8) is fixedly connected with support (9), and the support (9) is fixedly connected with non-slip rubber block (10)；The supporting leg (1)
Top is fixedly connected with connection support (11), and the upper connection support (11) is hinged with connection shaft (12), the upper company
Switch through axis (12) to be fixedly connected with center sleeve (13), center sleeve (13) upper left-hand is threaded with clamping screw
(14), center sleeve (13) upper right is fixedly connected with hanging plate (26), and the hanging plate (26) is connected with taper vertical
(27), the top of the center sleeve (13) is fixedly connected with platform deck (15)；Center sleeve (13) internal slide connects
It is connected to center slip pipe (25), center slip pipe (25) top is fixedly connected with lower platform (16), outside the lower platform (16)
Side, which is threaded with, adjusts bolt (17), and the adjusting bolt (17) passes through the lower platform (16), the adjusting bolt (17)
Top slide is connected with upper mounting plate (18)；Lower platform (16) centre is fixedly connected with bulb strut (24), the ball
Bulb is rotatablely connected fluted (23) at the top of head strut (24), is fixedly connected on the upper mounting plate (18) at the top of the groove (23)
Lower surface in the middle part of；It is fixedly connected with block (19) on the left of upper mounting plate (18) upper surface, upper mounting plate (18) upper surface
It is fixedly connected with platform sliding rail (22), the platform sliding rail (22) slidably connects grip slide (20), the grip slide
(20) screw top is connected with slider locking bolt (21)；Upper mounting plate (18) the upper surface top is connected with level(l)ing bubble
(28), upper mounting plate (18) the upper surface top is connected with compass (29).
2. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: supporting leg (1) quantity
It is set as 3.
3. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the lower clamping screw
(4) end selectively presses on the outer surface of the supporting leg (1).
4. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the supporting leg casing (3)
Groove is provided on the inner wall of right side, the supporting leg sliding rail (6) can be slidably matched with the groove, so that the supporting leg casing (3) edge
The supporting leg sliding rail (6) slides up and down.
5. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the upper clamping screw
(14) end selectively presses on the outer surface of the center slip pipe (25).
6. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the taper vertical (27)
It is hung on the hanging plate (26) by the slot opened on the hanging plate (26), the hammer handle part of the taper vertical (27) is wound with
Plumb line, described plumb line one end are connected to the hammer handle end of the taper vertical (27), the other end connection of the plumb line
In on the hanging plate (26).
7. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the center slip pipe (25)
Perpendicular to the lower platform (16) and the upper mounting plate (18), and its axis passes through the lower platform (16) and the upper mounting plate
(18) center.
8. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the adjusting bolt (17)
Quantity can be set as needed be 3,4 or 5.
9. a kind of Surveying Engineering according to claim 1 assists plotting board, it is characterised in that: the slider locking bolt
(21) end selectively presses on the upper surface of the upper mounting plate (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399401.7U CN209326662U (en) | 2019-03-27 | 2019-03-27 | A kind of Surveying Engineering auxiliary plotting board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399401.7U CN209326662U (en) | 2019-03-27 | 2019-03-27 | A kind of Surveying Engineering auxiliary plotting board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209326662U true CN209326662U (en) | 2019-08-30 |
Family
ID=67733241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920399401.7U Expired - Fee Related CN209326662U (en) | 2019-03-27 | 2019-03-27 | A kind of Surveying Engineering auxiliary plotting board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209326662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457221A (en) * | 2020-04-03 | 2020-07-28 | 商丘师范学院 | Indoor surveying and mapping device |
-
2019
- 2019-03-27 CN CN201920399401.7U patent/CN209326662U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457221A (en) * | 2020-04-03 | 2020-07-28 | 商丘师范学院 | Indoor surveying and mapping device |
| CN111457221B (en) * | 2020-04-03 | 2021-06-25 | 商丘师范学院 | Indoor surveying and mapping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20200327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |