CN207201740U - A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl - Google Patents
A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl Download PDFInfo
- Publication number
- CN207201740U CN207201740U CN201721087468.4U CN201721087468U CN207201740U CN 207201740 U CN207201740 U CN 207201740U CN 201721087468 U CN201721087468 U CN 201721087468U CN 207201740 U CN207201740 U CN 207201740U
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- CN
- China
- Prior art keywords
- pearl
- component
- mounting groove
- admittance
- slotting
- 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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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Farming Of Fish And Shellfish (AREA)
Abstract
The utility model proposes a kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl,Including handle,Admittance component,Pearl examines and allocates drive member,Insert guide member,Telescopic drive component and return triggering component,The first mounting groove is offered in the handle,The pearl examines and allocates drive member and is movably arranged on by the first spring in the first mounting groove,One end that the pearl examines and allocates drive member is provided with material toggling U-tube,The side wall of the telescopic drive component offers locating slot,The return triggering component is engaged with locating slot,The insertion guide member is provided with process auxiliary drive pushing block component,The end of the insertion guide member is provided with syringe needle,The material toggling U-tube is engaged with syringe needle,Guide-localization is carried out by admittance component,The enough parts of insertion guide rod will be attached with the pearl nuclear location of mantle piece,Pearl examines and allocates drive member and pearl core is sent into slotting nuclear location,It is simple to operate,Admittance,Positioning and the combination of slotting core,Replacement operation instrument is not needed,Slotting core efficiency can be improved.
Description
【Technical field】
It the utility model is related to the technical field of pearl culture, the slotting core work of particularly a kind of fresh water freshwater mussel cultured pearl
Tool.
【Background technology】
Pearl culture refers to that people can secrete the physiological function of nacre formation pearl according to pearl shell, in the body of pearl shell
Interior middle implantation mantle piece either pearl core adds mantle piece, goes out pearl by certain time cultivating.China is used at present
The shellfish for cultivating light pearl is most importantly hydriopsis cumingii, but with the increase of Margarita yield, pearl quality is not
Disconnected to decline, the benefit of pearl aquaculture is reducing.The benefit of hydriopsis cumingii aquaculture how is further improved, ensures fresh water pearl culturing
Industry sustainable and healthy development, turns into urgent problem to be solved.Slotting core is an important step of pearl aquaculture, improves and inserts core effect
It is to improve the important channel of pearl aquaculture benefit that core cost is inserted in rate and reduction, inserts core for hydriopsis cumingii nucleated pearl at present
Say, slotting core efficiency can be improved by being badly in need of one kind, and can reduce the slotting core new tool of production cost, finally improve pearl culture
The economic benefit of industry, when slotting core applies art, in the epidermis of incision insert core position direction directly with access needle and push aside and do passage,
Then with nucleus sending device pearl core along passage be sent into core position position, when be inserted directly into using access needle pushed aside in epidermis do passage when,
The broken wound of epidermis inner tissue is had resulted in, while applies the passage guide pin importing direction error that art holds and can cause and push passage aside and puncture
Epidermis and make operative failure, even if the epidermis of passage is intact, the pearl core now inserted can aggravate the wound of epidermis inner tissue again, especially
It is insertion pearl core up to core position position it is shallower when, pearl core be easy to abjection and mantle piece outflow；And the pearl core inserted enters
When core position position is deeper, pearl core again can severe crush soft body organ and cause the female shellfish of operation dead, therefore propose a kind of light
The slotting nuclear tool of water freshwater mussel cultured pearl.
【Utility model content】
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of inserting for fresh water freshwater mussel cultured pearl
Nuclear tool, guide-localization is carried out by admittance component, then appraised and decided the pearl for being attached with mantle piece by inserting the enough parts of guide rod
To nuclear location is inserted, pearl examines and allocates drive member and pearl core is sent into slotting nuclear location, simple to operate for position, and admittance, positioning have with slotting core
Machine combines, it is not necessary to replacement operation instrument, it is possible to increase inserts core efficiency.
To achieve the above object, the utility model proposes a kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl, including hand
Handle, admittance component, pearl examine and allocate drive member, insertion guide member, telescopic drive component and return triggering component, the handle
The first mounting groove is inside offered, the pearl examines and allocates drive member and is movably arranged on by the first spring in the first mounting groove, institute
To state pearl and examine and allocate and the second mounting groove is offered in drive member, one end that the pearl examines and allocates drive member is provided with material toggling U-tube,
The other end that the pearl examines and allocates drive member is provided with telescopic drive component, and the side wall of the telescopic drive component offers positioning
Groove, the side wall of first mounting groove are provided with the 3rd mounting groove, and the return triggering component is movably arranged on by the 3rd spring
3rd mounting groove, the return triggering component are engaged with locating slot, and the insertion guide member is pacified by second spring activity
In the second mounting groove, the insertion guide member is provided with process auxiliary drive pushing block component, the end of the insertion guide member
Portion is provided with syringe needle, and the material toggling U-tube is engaged with syringe needle, and the admittance component is fixedly mounted on the end of handle, described logical
Lead the surface that component is located at syringe needle.
Preferably, being additionally provided with top cover on the handle, horizontal concrete chute and longitudinal chute are offered on the top cover, it is described
Horizontal concrete chute is engaged with telescopic drive component, and the longitudinal chute is engaged with return triggering component.
Preferably, the telescopic drive component also includes location and installation portion, the first connection slide bar and the first driving pushing block,
The side wall in the location and installation portion offers locating slot, and the locating slot is engaged with return triggering component, the location and installation
Portion is provided with the first connection slide bar, and the first connection slide bar runs through horizontal concrete chute, and the top of the first connection slide bar is provided with
First driving pushing block.
Preferably, the return triggering component also includes positioning sliding block, the second connection slide bar and the second driving pushing block, institute
Positioning sliding block is stated in the 3rd mounting groove, the positioning sliding block is connected by the second connection slide bar with the second driving pushing block,
The second connection slide bar runs through longitudinal chute, and the second connection slide bar is arranged in the 3rd mounting groove by the 3rd spring.
Preferably, the end of the positioning sliding block is provided with driving inclined-plane and positioning cascaded surface, the telescopic drive component
Driving positioning sliding block is coordinated to be moved along the 3rd mounting groove with driving inclined-plane, the positioning cascaded surface is engaged with locating slot.
Preferably, the insertion guide member also includes guide body and syringe needle installation portion, the one of the guide body
End is connected with second spring, and the other end of the guide body is provided with internal thread installation portion, and the syringe needle installation portion is arranged on interior
On threaded mounting portion, the syringe needle installation portion is provided with syringe needle, and telescopic drive component is provided with above the guide body.
Also include the first adjustable shelf preferably, the pearl examines and allocates drive member and dial portion, first adjustable shelf
In the first mounting groove, the both sides of first adjustable shelf are provided with guide protrusions, offered in first mounting groove with
The guide groove that guide protrusions are engaged, one end of first adjustable shelf are connected with the first spring, first adjustable shelf it is another
One end, which is provided with, dials portion, and described group falls portion and be provided with connection casing, and the connection casing is provided with material toggling U-tube, described
The second mounting groove is offered in first adjustable shelf, the insertion guide member is movably arranged on the first adjustable shelf by second spring
Interior, the syringe needle runs through the slot of connector shell end.
Preferably, the admittance component includes admittance bar and frame is fixedly mounted, the fixed installation frame is arranged on handle
End, the admittance bar be arranged on be fixedly mounted frame on, the admittance boom end is shaped as elliposoidal.
The beneficial effects of the utility model：The utility model is examined and allocated drive member by handle, admittance component, pearl, inserted
Enter the cooperation of guide member, telescopic drive component and return triggering component etc., guide-localization is carried out by admittance component, in slotting core
During applying art, when sending core passage along core position direction in the epidermis of incision using admittance bar, the table through the conducting of admittance device
Not only less damage epidermal tissue, and be the guide for inserting pearl core again after hide is opened, by driving forwards telescopic drive component
Insertion guide member is pushed to slotting core station, the enough parts of insertion guide rod will be attached with the pearl nuclear location of mantle piece to slotting core position
Put, by promoting driving process auxiliary drive pushing block component, control syringe needle clawback backward backward, pearl examine and allocate drive member by pearl core from
Dial on syringe needle, the pearl core with mantle piece is sent to slotting nuclear location, has both ensured pearl renucleation core position position exactly, again
Reduce damage epidermal tissue and mitigate the organ of extrusion soft portion tissue, guaranteeing role is played for the health existence for female shellfish of performing the operation,
Simple to operate, admittance, positioning and slotting core organically combine, it is not necessary to replacement operation instrument, it is possible to increase insert core efficiency.
Feature and advantage of the present utility model will be described in detail by embodiment combination accompanying drawing.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model；
Fig. 2 is a kind of schematic diagram for sending pearl nuclear state of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model；
Fig. 3 is a kind of schematic diagram for dialling pearl nuclear state of slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model；
Fig. 4 is a kind of overlooking the structure diagram of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model；
Fig. 5 is a kind of structural representation of the insertion guide member of slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model
Figure；
Fig. 6 is a kind of left view structure of the telescopic drive component of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model
Schematic diagram；
Fig. 7 is a kind of plan structure of the return triggering component of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model
Schematic diagram.
【Embodiment】
Refering to Fig. 1 to a kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl of Fig. 7 the utility model, including handle 1, admittance structure
Part 2, pearl examine and allocate drive member 3, insert guide member 4, telescopic drive component 5 and return triggering component 6, in the handle 1
The first mounting groove 11 is offered, the pearl examines and allocates drive member 3 and is movably arranged on the first mounting groove 11 by the first spring 32
Interior, the pearl, which is examined and allocated, offers the second mounting groove 312 in drive member 3, one end that the pearl examines and allocates drive member 3 is provided with
Material toggling U-tube 332, the other end that the pearl examines and allocates drive member 3 are provided with telescopic drive component 5, the telescopic drive component 5
Side wall offer locating slot 511, the side wall of first mounting groove 11 is provided with the 3rd mounting groove 13, the return triggering component
6 are movably arranged on the 3rd mounting groove 13 by the 3rd spring 64, and the return triggering component 6 is engaged with locating slot 511, described
Insertion guide member 4 is movably arranged in the second mounting groove 312 by second spring 42, and the insertion guide member 4 is provided with
Process auxiliary drive pushing block component 45, the end of the insertion guide member 4 are provided with syringe needle 44, the material toggling U-tube 332 and syringe needle 44
It is engaged, the admittance component 2 is fixedly mounted on the end of handle 1, and the admittance component 2 is located at the surface of syringe needle 44.Institute
State and top cover 12 is additionally provided with handle 1, horizontal concrete chute 121 and longitudinal chute 122, the horizontal concrete chute are offered on the top cover 12
121 are engaged with telescopic drive component 5, and the longitudinal chute 122 is engaged with return triggering component 6.The telescopic drive structure
Part 5 also includes location and installation portion 51, first and connects the driving pushing block 53 of slide bar 52 and first, and the side wall in the location and installation portion 51 is opened
Provided with locating slot 511, the locating slot 511 is engaged with return triggering component 6, and the location and installation portion 51 is provided with first and connected
Slide bar 52 is connect, the first connection slide bar 52 runs through horizontal concrete chute 121, and the top of the first connection slide bar 52 is provided with first and driven
Dynamic pushing block 53.The return triggering component 6 also includes positioning sliding block 61, second and connects the driving pushing block 63 of slide bar 62 and second, institute
Positioning sliding block 61 is stated in the 3rd mounting groove 13, the positioning sliding block 61 is pushed away by the second connection slide bar 62 and the second driving
Block 63 is connected, and the second connection slide bar 62 runs through longitudinal chute 122, and the second connection slide bar 62 is pacified by the 3rd spring 64
In the 3rd mounting groove 13.The end of the positioning sliding block 61 is provided with driving inclined-plane 611 and positioning cascaded surface 612, described to stretch
Contracting drive member 5 coordinates driving positioning sliding block 61 to be moved along the 3rd mounting groove 13 with driving inclined-plane 611, the positioning cascaded surface
612 are engaged with locating slot 511.The insertion guide member 4 also includes guide body 41 and syringe needle installation portion 43, the guide rod
One end of body 41 is connected with second spring 42, and the other end of the guide body 41 is provided with internal thread installation portion 411, the pin
Head installation portion 43 is arranged on internal thread installation portion 411, and the syringe needle installation portion 43 is provided with syringe needle 44.The pearl examines and allocates drive
Dynamic component 3 also includes the first adjustable shelf 31 and dials portion 33, and first adjustable shelf 31 is arranged in the first mounting groove 11, described
The both sides of first adjustable shelf 31 are provided with guide protrusions 311, offer in first mounting groove 11 and are engaged with guide protrusions 311
Guide groove 111, one end of first adjustable shelf 31 is connected with the first spring 32, and the other end of first adjustable shelf 31 is set
Have and dial portion 33, described group falls portion 33 and be provided with connection casing 331, and the connection casing 331 is provided with material toggling U-tube
332, the second mounting groove 312 is offered in first adjustable shelf 31, the insertion guide member 4 passes through the activity of second spring 42
In the first adjustable shelf 31, slot 3311 of the syringe needle 44 through connection casing 331 end.The admittance component 2
Including admittance bar 21 and frame 22 is fixedly mounted, the end that frame 22 is fixedly mounted and is arranged on handle 1, the admittance bar 21 is installed
On frame 22 is fixedly mounted, the end of admittance bar 21 is shaped as elliposoidal.
Utility model works process：
A kind of operation principle of the slotting nuclear tool of fresh water freshwater mussel cultured pearl of the utility model is：Preoperative, general is applied in slotting core
Mantle piece in the pearl core surface attachment of intermediate throughholes is offered, pins process auxiliary drive pushing block component 45, and pearl core is inserted into
On syringe needle 44, during slotting core applies art, otch is opened up in the organization internal of freshwater mussel using knife, then using admittance bar 21
Core passage is sent along core position direction in the epidermis of incision, after the epidermis opening turned on through the head of the elliposoidal of admittance bar 21 not
Only less damage epidermal tissue, and be the guide for inserting pearl core again, by driving forwards telescopic drive component 5 to positioning sliding block
In 61 insertion locating slots 511, it will examine and allocate drive member 3 and position, the syringe needle 44 now inserted on guide member 4 is along sending core to lead to
Road enters slotting core station, that is, inserts guide member 4 by the pearl nuclear location for being attached with mantle piece to slotting nuclear location, then pass through
Promote driving process auxiliary drive pushing block component 45 backward, control guide body 41 overcomes the resistance of spring along the second mounting groove 312
It is moved rearwards, syringe needle 44 backward dialled by clawback, material toggling U-tube 332 from syringe needle 44 by pearl core, and the pearl core with mantle piece is sent
Enter to slotting nuclear location, then moving handle 1 plugs in nuclear device away from freshwater mussel, by promoting return triggering component 6 to slide positioning
Block 61 departs from locating slot 511, and the enough parts 5 of telescopic drive can reset to original state, and the admittance that can be carried out next time inserts core feeding,
Ensure exactly by pearl renucleation core position position, while reduce damage epidermal tissue again and mitigate the device of extrusion soft portion tissue
Official, guaranteeing role is played for the health existence for female shellfish of performing the operation, simple to operate, admittance, positioning and slotting core organically combine, it is not necessary to more
Change operation instrument, it is possible to increase insert core efficiency.
Above-described embodiment be to explanation of the present utility model, be not to restriction of the present utility model, it is any new to this practicality
Scheme after type simple transformation belongs to the scope of protection of the utility model.
Claims (8)
- A kind of 1. slotting nuclear tool of fresh water freshwater mussel cultured pearl, it is characterised in that：Including handle (1), admittance component (2), pearl core Dial drive member (3), insertion guide member (4), telescopic drive component (5) and return triggering component (6), the handle (1) The first mounting groove (11) is inside offered, the pearl examines and allocates drive member (3) and is movably arranged on first by the first spring (32) In mounting groove (11), the pearl, which is examined and allocated in drive member (3), offers the second mounting groove (312), and the pearl examines and allocates driving One end of component (3) is provided with material toggling U-tube (332), and the other end that the pearl examines and allocates drive member (3) is provided with telescopic drive structure Part (5), the side wall of the telescopic drive component (5) offer locating slot (511), and the side wall of first mounting groove (11) is provided with 3rd mounting groove (13), the return triggering component (6) are movably arranged on the 3rd mounting groove (13), institute by the 3rd spring (64) State return triggering component (6) to be engaged with locating slot (511), the insertion guide member (4) passes through second spring (42) activity In the second mounting groove (312), the insertion guide member (4) is provided with process auxiliary drive pushing block component (45), described to insert The end for entering guide member (4) is provided with syringe needle (44), and the material toggling U-tube (332) is engaged with syringe needle (44), the admittance structure Part (2) is fixedly mounted on the end of handle (1), and the admittance component (2) is located at the surface of syringe needle (44).
- A kind of 2. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 1, it is characterised in that：The handle (1) On be additionally provided with top cover (12), offer horizontal concrete chute (121) and longitudinal chute (122) on the top cover (12), it is described laterally sliding Groove (121) is engaged with telescopic drive component (5), and the longitudinal chute (122) is engaged with return triggering component (6).
- A kind of 3. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 2, it is characterised in that：The telescopic drive Component (5) also includes location and installation portion (51), the first connection slide bar (52) and the first driving pushing block (53), the location and installation portion (51) side wall offers locating slot (511), and the locating slot (511) is engaged with return triggering component (6), the positioning peace Dress portion (51) is provided with the first connection slide bar (52), and the first connection slide bar (52) runs through horizontal concrete chute (121), and described first The top for connecting slide bar (52) is provided with the first driving pushing block (53).
- A kind of 4. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 2, it is characterised in that：The return triggering Component (6) also includes positioning sliding block (61), the second connection slide bar (62) and the second driving pushing block (63), the positioning sliding block (61) In the 3rd mounting groove (13), the positioning sliding block (61) passes through the second connection slide bar (62) and the second driving pushing block (63) It is connected, the second connection slide bar (62) runs through longitudinal chute (122), and the second connection slide bar (62) passes through the 3rd spring (64) it is arranged in the 3rd mounting groove (13).
- A kind of 5. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 4, it is characterised in that：The positioning sliding block (61) end is provided with driving inclined-plane (611) and positioning cascaded surface (612), the telescopic drive component (5) and driving inclined-plane (611) coordinate driving positioning sliding block (61) mobile along the 3rd mounting groove (13), the positioning cascaded surface (612) and locating slot (511) it is engaged.
- A kind of 6. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 1, it is characterised in that：The insertion guide rod Component (4) also includes guide body (41) and syringe needle installation portion (43), one end of the guide body (41) and second spring (42) it is connected, the other end of the guide body (41) is provided with internal thread installation portion (411), syringe needle installation portion (43) installation On interior threaded mounting portion (411), the syringe needle installation portion (43) is provided with syringe needle (44).
- A kind of 7. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 1, it is characterised in that：The pearl is examined and allocated Drive member (3) also includes the first adjustable shelf (31) and dials portion (33), and first adjustable shelf (31) is arranged on the first installation In groove (11), the both sides of first adjustable shelf (31) are provided with guide protrusions (311), are offered in first mounting groove (11) The guide groove (111) being engaged with guide protrusions (311), one end and the first spring (32) phase of first adjustable shelf (31) Even, the other end of first adjustable shelf (31), which is provided with, dials portion (33), and described group falls portion (33) and be provided with connection casing (331), the connection casing (331) is provided with material toggling U-tube (332), and second is offered in first adjustable shelf (31) Mounting groove (312), the insertion guide member (4) are movably arranged in the first adjustable shelf (31) by second spring (42), institute State slot (3311) of the syringe needle (44) through connection casing (331) end.
- A kind of 8. slotting nuclear tool of fresh water freshwater mussel cultured pearl as claimed in claim 1, it is characterised in that：The admittance component (2) include admittance bar (21) and frame (22) is fixedly mounted, the end that frame (22) is fixedly mounted and is arranged on handle (1) is described Admittance bar (21), which is arranged on, to be fixedly mounted on frame (22), and admittance bar (21) end is shaped as elliposoidal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087468.4U CN207201740U (en) | 2017-08-28 | 2017-08-28 | A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721087468.4U CN207201740U (en) | 2017-08-28 | 2017-08-28 | A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207201740U true CN207201740U (en) | 2018-04-10 |
Family
ID=61825561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721087468.4U Expired - Fee Related CN207201740U (en) | 2017-08-28 | 2017-08-28 | A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207201740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107494359A (en) * | 2017-08-28 | 2017-12-22 | 戚鸟定 | A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl |
-
2017
- 2017-08-28 CN CN201721087468.4U patent/CN207201740U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107494359A (en) * | 2017-08-28 | 2017-12-22 | 戚鸟定 | A kind of slotting nuclear tool of fresh water freshwater mussel cultured pearl |
| CN107494359B (en) * | 2017-08-28 | 2023-09-12 | 浙江天使之泪珠宝有限公司 | Nuclear instrument of inserting of pearl is bred to freshwater mussel |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20200828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |