CN207305766U - A kind of Bitterling Welfare fish-eggs gather hatching apparatus - Google Patents
A kind of Bitterling Welfare fish-eggs gather hatching apparatus Download PDFInfo
- Publication number
- CN207305766U CN207305766U CN201720511148.0U CN201720511148U CN207305766U CN 207305766 U CN207305766 U CN 207305766U CN 201720511148 U CN201720511148 U CN 201720511148U CN 207305766 U CN207305766 U CN 207305766U
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- Prior art keywords
- gill
- water inlet
- incubator
- outlet pipe
- inlet pipe
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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 discloses a kind of Bitterling Welfare fish-eggs to gather hatching apparatus, is connected between the emulation freshwater mussel of the device and incubator with connecting tube, and emulation freshwater mussel is internally provided with outlet pipe and water inlet pipe, and the front shroud and back cover of incubator are fixed as one by geometrical clamp；Gill ball is equipped with the middle part of incubator, gill ball lower end is installed with gill ball conduit, and gill ball conduit lower end passes through the gill plate hole on the gill plate；Uniformly it is covered with gill rod on gill ball；Peristaltic pump water inlet pipe is connected with incubator rear end, wriggling water pump outlet pipe is connected with emulating the outlet pipe rear end of freshwater mussel, peristaltic pump drives current to be flowed into from the water inlet pipe front end of emulation freshwater mussel, outlet pipe front end outflow Shi Bitterling Welfare fish fertilized eggs above from water inlet pipe front end are adsorbed on the gill rod of gill ball, and make its on the gill rod growth and development until grow up to juvenile fish.The device is easy to operate, stability is strong, effectively reduces juvenile fish germ infection rate and the death rate, fertility rate and hatchability is improved 20~30%, can be widely used in the breeding of Bitterling Welfare fishes indoor and outdoor and cultivation.
Description
Technical field
The utility model belongs to Bitterling Welfare fish breeding fields, more particularly to a kind of Bitterling Welfare fish-eggs collection hatching apparatus.
Background technology
Bitterling Welfare fishes（Rhodeus ocellatus）It is under the jurisdiction of Cyprinidae（Cyprinidae）Bitterling Welfare belong to（Rhodeus）, China has
5 belong to 23 kinds, are a kind of small-sized wild freshwater fishes, its appearance is bright-coloured gorgeous, widely distributed in China, have higher scientific research,
View and admire and edible value.The breeding of Bitterling Welfare fishes is with the gill that embryonated egg must be parasitized to freshwater mussel by the characteristic , Bitterling Welfare fishes of freshwater mussel
On valve, embryonated egg is hatched into juvenile fish on the gill lamella.
The , Bitterling Welfare stocks of fish are faced with the trend gradually decreased in China's Fisheries Development at present, simultaneously as water environment
Pollution, harmful substance is exceeded, and the freshwater mussel quantity for causing to maintain the breeding of Bitterling Welfare fishes is also reduced year by year, and the Bitterling Welfare hatch fish roe phases
Pollutant frequently results in fry deformity or dead.Only have several Bitterling Welfare fish artificial propagations at present to succeed, but in artificial propagation
During there are required freshwater mussel field acquisition difficulty, the portable disease carrying germ of freshwater mussel, freshwater mussel severe life time reduction, hatch fish roe during
The problems such as freshwater mussel die by visitation of God, dead freshwater mussel water quality easy to pollute, and then have impact on the reproductive efficiency of Bitterling Welfare.
The content of the invention
The purpose of this utility model is to provide one kind can substitute completely freshwater mussel, structure it is novel, it is easy to operate, be easy to take
Band, suitable for batch capture and hatching, applied widely, fertility rate and hatchability is high, easy to sterilizing Bitterling Welfare fish-eggs gather
Hatching apparatus.
In order to solve the above technical problems, the utility model proposes a kind of Bitterling Welfare fish-eggs collection hatching apparatus, including with
Lower content：A kind of Bitterling Welfare fish-eggs gather hatching apparatus, it is characterised in that：Including emulating freshwater mussel（1）, the emulation freshwater mussel（1）With
Connecting tube（2）One end connects, the connecting tube（2）The other end and incubator（3）Connection；The emulation freshwater mussel（1）Including emulation
Clam shell（4）, the emulation clam shell（4）Middle part is equipped with outlet pipe（5）, the outlet pipe（5）Parallel beneath is equipped with water inlet pipe（6）,
The water inlet pipe（6）Lower section is equipped with fixation fork（9）, in the emulation clam shell（4）The interior outlet pipe（5）With the water inlet pipe
（6）Cross section is oblateness；Outlet pipe front end（7）With water inlet pipe front end（8）In the emulation clam shell（4）It is interior and with it is described imitative
True clam shell（4）One side edge is alignd, outlet pipe rear end（11）With water inlet pipe rear end（10）From the emulation clam shell（4）Another side
Edge is pierced by, the outlet pipe rear end（11）With the water inlet pipe rear end（10）Cross section fades to circle by oblateness, described
Outlet pipe rear end（11）It is set to upward 90 degree of bendings.
The incubator（3）It is set to hollow structure, the incubator（3）Cross section is equilateral triangle, described equilateral three
Angular angle is arc-shaped, the incubator（3）It is tubular structure that both ends, which are gradually closed up,；The incubator（3）External structure bag
Include front shroud（13）, the front shroud（13）Front end is equipped with front shroud water inlet（12）, the front shroud（13）Rear end is divided on the outside of arc-shaped angle
She You not geometrical clamp（25）, the front shroud（13）Incubator sealing ring is equipped with back edge（16）, the incubator sealing ring
（16）Opposite side is equipped with back cover（22）, the back cover（22）Front end is respectively equipped with fixed mounting board wedge on the outside of arc-shaped angle（24）, institute
State fixed mounting board wedge（24）With the geometrical clamp（25）Being entrenched togather makes the front shroud（13）With the back cover（22）It is sealed into
One, the back cover（22）Rear end is equipped with back cover water outlet（23）；The incubator（3）Front shroud water inlet described in internal face
（12）Equipped with diversion spindle（14）, the diversion spindle（14）Middle part is equipped with cross diversion spindle fixed link（15）, the diversion spindle consolidates
Fixed pole（15）The front shroud is fixed in end（13）On inner wall；The incubator（3）Bosom is equidistantly equipped with 3 gill balls
（17）, each gill ball（17）Lower section is equipped with gill ball conduit（18）, the gill ball conduit（18）One end penetrates into the gill ball
（17）At center, the gill ball conduit（18）The other end passes through the gill plate（20）On gill plate hole（21）, the gill plate hole（21）On
Equipped with gill plate hole sealing ring（19）, the gill plate（20）It is fixed on the back cover（22）Inside starts at closing in.
Further, the connecting tube（2）One end and the water inlet pipe rear end（10）Connection, the connecting tube（2）It is another
End and the front shroud water inlet（12）Connection.
Further, the gill ball（17）Including gill rod（26）, the gill rod（26）Uniformly it is arranged on gill spherical shell（27）Outside；
The gill rod（26）Including the branchial duct（28）, the branchial duct（28）Top is spherical for semicircle, around the branchial duct（28）Outside on
Middle part is equidistantly equipped with the gill lamella（29）, the gill lamella（29）Inside for hollow structure and with the branchial duct（28）Inside communicates, institute
State the gill lamella（29）Both sides and the branchial duct（28）Outside is equidistantly equipped with gill opening（30）, the branchial duct（28）Lower end vertically penetrates institute
State gill spherical shell（27）And it is fixed on the gill spherical shell.
Further, the gill ball is penetrated（17）The gill ball conduit（18）It is fixed on the gill spherical shell（27）.
Further, the back cover water outlet（23）It is connected with peristaltic pump water inlet pipe, the outlet pipe rear end（11）With it is compacted
Dynamic water pump outlet pipe connection.
Further, the flow velocity of the peristaltic pump is 0.5ml/min.
The beneficial effects of the utility model are：The present apparatus is safe and reliable, easy to operate, stability is strong, applied widely,
Bred available for a variety of Bitterling Welfare fishes indoor and outdoors, the fertility rate and hatchability of fish-egg can be effectively improved, reduce the infection of juvenile fish germ
Rate and the death rate.By replacing the gill ball in the present apparatus, it can realize that carrying out number to embryonated egg unrestrictedly gathers using the present apparatus
Unrestrictedly hatch with quantity, fertility rate and hatchability is improved 20~30%, can be used for extensive, large batch of Bitterling Welfare fishes
In breeding and cultivation.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is emulation freshwater mussel structural decomposition diagram in the present invention.
Fig. 3 is incubator structure perspective diagram in the present invention.
Fig. 4 is incubator structural decomposition diagram in the present invention.
Fig. 5 is the cross-sectional schematic diagram of gill spherical structure in the present invention.
Fig. 6 is gill rod structure diagram in the present invention.
In figure：1. emulate freshwater mussel；2. connecting tube；3. incubator；4. emulate clam shell；5. outlet pipe；6. water inlet pipe；7. go out
Water pipe front end；8 water inlet pipe front ends；9. fixation fork；10. water inlet pipe rear end；11. outlet pipe rear end；12. front shroud water inlet；Before 13.
Cover；14. diversion spindle；15 diversion spindle fixed links；16. incubator sealing ring；17. gill ball；18. gill ball conduit；19. gill plate hole
Sealing ring；20. the gill plate；21 gill plate holes；22. back cover；23. back cover water outlet；24. fix mounting board wedge；25. geometrical clamp；26. the gill
Rod；27. gill spherical shell；28. the branchial duct；29. the gill lamella；30 gill openings.
Embodiment
The utility model is described in further detail below in conjunction with brief description of the drawings.
Embodiment 1：Referring to figs. 1 to Fig. 4, a kind of Bitterling Welfare fish-eggs gather hatching apparatus, including emulation freshwater mussel 1,2 and of connecting tube
Incubator 3, the water inlet pipe rear end 10 emulated in freshwater mussel 1 are connected with 2 one end of connecting tube, in 2 other end of connecting tube and incubator 3
Front shroud water inlet 12 connects.
The architectural feature of freshwater mussel is imitated, emulation freshwater mussel 1 is designed as including two emulation that can be closed clam shells 4, water outlets
Pipe 5, water inlet pipe 6 and fixation fork 9,5 parallel beneath of outlet pipe set water inlet pipe 6, outlet pipe 5 and water inlet pipe 6 from the imitative of two closures
The true inside of clam shell 4 passes through, and the outlet pipe 5 and 6 cross section of water inlet pipe inside emulation clam shell 4 are oblateness；Outlet pipe front end 7
It is arranged in emulation clam shell 4 with water inlet pipe front end 8 and aligns with emulation 4 one side edge of clam shell, outlet pipe rear end 11 and water inlet
Pipe rear end 10 is pierced by from emulation 4 another lateral edges of clam shell, and outlet pipe rear end 11 and 10 cross section of water inlet pipe rear end are by oblateness
Circle is faded to, the outlet pipe rear end 11 is set to upward 90 degree of bendings.
Incubator 3 is set to hollow structure, and 3 cross section of incubator is equilateral triangle, and 3 angles of equilateral triangle are set to round
Arc, it is tubular structure that 3 both ends of incubator, which are gradually closed up,；3 external structure of incubator includes front shroud 13,16 and of incubator sealing ring
Back cover 22, front shroud 13 is identical with 22 shapes and sizes of back cover, and 13 front end of front shroud is equipped with front shroud water inlet 12,13 rear end of front shroud
Geometrical clamp 25 is respectively equipped with the outside of 3 arc-shaped angles；22 front end of back cover 3 is respectively equipped with fixed mounting board wedge on the outside of arc-shaped angle
24, incubator sealing ring 16 is equipped between front shroud 13 and back cover 22, is entrenched togather by geometrical clamp 25 and fixed mounting board wedge 24
Front shroud 13 and back cover 22 is set to seal and be integrated, 22 rear end of back cover is equipped with back cover water outlet 23.
3 inside face front shroud water inlet 12 of incubator is equipped with diversion spindle 14, and the middle part of diversion spindle 14 is equipped with cross diversion spindle
Fixed link 15,15 end of diversion spindle fixed link are fixed on 13 inner wall of front shroud；3 bosom of incubator is equidistantly equipped with 3 gills
Ball 17, each lower section of gill ball 17 are equipped with gill ball conduit 18, and 18 one end of gill ball conduit penetrates into 17 center of gill ball, and is fixed on gill ball
On 17 gill spherical shell 27, for 18 other end of gill ball conduit through the gill plate hole 21 on the gill plate 20, it is close that gill plate hole 21 is equipped with gill plate hole
Seal 19, the gill plate 20, which is fixed on inside back cover 22, to be started at closing in.
With reference to Fig. 5, gill ball 17 includes gill rod 26 and gill spherical shell 27, and gill spherical shell 27 is hollow spherical shape structure, and gill rod 26 is equal
It is even to be distributed in the outside of gill spherical shell 27.
With reference to Fig. 6, gill rod 26 includes the branchial duct 28, the gill lamella 29 and gill opening 30, and 28 top of the branchial duct is spherical for semicircle, around the branchial duct
The upper middle part in 28 outsides is equidistantly equipped with the gill lamella 29, and the inside of the gill lamella 29 connects for hollow structure and with the inside of the branchial duct 28,29 liang of the gill lamella
Gill opening 30 equidistantly is equipped with the gap that the outside of the branchial duct 28 produces between side and the gill lamella, 28 lower end of the branchial duct vertically penetrates gill spherical shell 27
And it is fixed on gill spherical shell 27.
Present apparatus peristaltic pump driving current flow, coutroi velocity 0.5ml/min, during installation, back cover water outlet 23 with
Peristaltic pump water inlet pipe connects, and water pipe rear end 11 is connected with wriggling water pump outlet pipe.
During wriggling pump work, current enter from the water inlet pipe front end 8 of emulation freshwater mussel, after water inlet pipe 6, water inlet pipe
End 10, connecting tube 2, front shroud water inlet 12, inside front shroud 13, the gill lamella 29 and gill opening 30, the gill lamella 29 and the branchial duct 28 on the branchial duct 28
Inside internal, gill ball 17, middle and back, back cover water outlet 23, peristaltic pump water inlet pipe, peristaltic pump, wriggling in gill bulb 18, back cover 22
Water pump outlet pipe, outlet pipe rear end 11, outlet pipe 5, current are finally flowed out from outlet pipe front end 7.
When carrying out the breeding of Bitterling Welfare fishes, which is put in the bottom, completes peristaltic pump connection, then under emulation freshwater mussel 1
The fixation fork 9 at end is inserted into water-bed sandstone, or makes emulation freshwater mussel 1 straight to emulation 1 liang of freshwater mussel, 90 degree of lateral bend fixation fork 9
Stand in water, remain that outlet pipe front end 7 and water inlet pipe front end 8 are exposed to outside water-bed sandstone, open wriggling pumping source, make water
Stream flows in the device.After Bitterling Welfare fishes find emulation freshwater mussel 1, raun will stretch out tube for laying eggs, the water inlet of insertion emulation freshwater mussel 1
Pipe front end 8, ovum is originated in water inlet pipe 6, subsequent milter also emulation freshwater mussel 1 water inlet pipe front end 8 near ejaculate, make sperm with
Current enter in water inlet pipe 6 from water inlet pipe front end 8, and as current flow, ovum and sperm are successively reached inside front shroud 13, due to leading
The shunting and inhibition that stream shuttle 14 produces current, make current drive ovum and sperm to be sufficiently mixed inside front shroud 13, make ovum
Complete fertilization.Embryonated egg is reached near gill ball 17 with current, since current produce suction and fertilization in the gill opening 30 on gill rod 26
The distal process that sticks of front end acts the adhesion strength produced on ovum, embryonated egg is finally depended between the gill lamella 29, due to the work of peristaltic pump
Work makes current constantly be flowed in the device, can supply the sufficient oxygen needed for development of fertilized ova, make embryonated egg in the device
Normal growth and development, until hatching is swum out of into juvenile fish, juvenile fish from water inlet pipe front end 8.Freshwater mussel can be substituted completely using the device,
Fertility rate and hatchability is set to improve 20~30%.The device is dismantled after use, through scrub with can be again after disinfection
Use.
Embodiment 2：If carrying out large-scale breeding, three gill balls 17 which is internally provided with can largely adsorb fertilization
Ovum, dismantling incubator separates front shroud 13 and back cover 22, is with the naked eye observed that absorption situation of the embryonated egg on gill rod 26,
If being covered with embryonated egg on gill rod 26, which can be transferred to hatchery and be hatched, or the gill for being covered with embryonated egg
Ball 17 changes out, which is continued to be put in original place progress collecting fertilized eggs, the gill ball 17 more to swap out is transferred to lucifuge
Hatched in hatchery.Need to keep the persistent loop flowing of hatching water during hatching, to provide sufficient oxygen, incubation temperature
For 20-30 DEG C.The device can be used to interior, it can also be used to and it is outdoor, during for outdoor, it again may be by replacing gill ball 17 and exist
Field largely gathers Bitterling Welfare fish fertilized eggs, then carries out concentration hatching.
Finally it should be noted that：Above example is only to illustrate the technical solution of utility model, rather than its limitations；To the greatest extent
Pipe is with reference to the foregoing embodiments described in detail the present invention, it will be understood by those of ordinary skill in the art that：It is still
It can modify to the technical solution described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic；
And these modifications or replacement, the essence of appropriate technical solution is departed from the spirit and model of technical solution of the embodiment of the present invention
Enclose.
Claims (5)
1. a kind of Bitterling Welfare fish-eggs gather hatching apparatus, it is characterised in that：Including emulating freshwater mussel（1）, the emulation freshwater mussel（1）With connecting
Adapter（2）One end connects, the connecting tube（2）The other end and incubator（3）Connection；The emulation freshwater mussel（1）Including emulating freshwater mussel
Shell（4）, the emulation clam shell（4）Middle part is equipped with outlet pipe（5）, the outlet pipe（5）Parallel beneath is equipped with water inlet pipe（6）, institute
State water inlet pipe（6）Lower section is equipped with fixation fork（9）, in the emulation clam shell（4）The interior outlet pipe（5）With the water inlet pipe
（6）Cross section is oblateness；Outlet pipe front end（7）With water inlet pipe front end（8）In the emulation clam shell（4）It is interior and with it is described imitative
True clam shell（4）One side edge is alignd, outlet pipe rear end（11）With water inlet pipe rear end（10）From the emulation clam shell（4）Another side
Edge is pierced by, the outlet pipe rear end（11）With the water inlet pipe rear end（10）Cross section fades to circle by oblateness, described
Outlet pipe rear end（11）It is set to upward 90 degree of bendings；The incubator（3）It is set to hollow structure, the incubator（3）Cross section
For equilateral triangle, the angle of the equilateral triangle is arc-shaped, the incubator（3）It is tubular structure that both ends, which are gradually closed up,；
The incubator（3）External structure includes front shroud（13）, the front shroud（13）Front end is equipped with front shroud water inlet（12）, the front shroud
（13）Rear end is respectively equipped with geometrical clamp on the outside of arc-shaped angle（25）, the front shroud（13）Incubator sealing ring is equipped with back edge
（16）, the incubator sealing ring（16）Opposite side is equipped with back cover（22）, the back cover（22）On the outside of the arc-shaped angle in front end respectively
Equipped with fixed mounting board wedge（24）, the fixed mounting board wedge（24）With the geometrical clamp（25）Being entrenched togather makes the front shroud（13）
With the back cover（22）Sealing is integrated, the back cover（22）Rear end is equipped with back cover water outlet（23）；The incubator（3）It is internal
Front shroud water inlet described in face（12）Equipped with diversion spindle（14）, the diversion spindle（14）Middle part is equipped with cross diversion spindle fixed link
（15）, the diversion spindle fixed link（15）The front shroud is fixed in end（13）On inner wall；The incubator（3）Bosom etc.
Spacing is equipped with 3 gill balls（17）, each gill ball（17）Lower section is equipped with gill ball conduit（18）, the gill ball conduit（18）One end
Penetrate into the gill ball（17）At center, the gill ball conduit（18）The other end passes through the gill plate（20）On gill plate hole（21）, institute
State gill plate hole（21）It is equipped with gill plate hole sealing ring（19）, the gill plate（20）It is fixed on the back cover（22）Inside starts to close up
Place.
A kind of 2. Bitterling Welfare fish-eggs collection hatching apparatus according to claim 1, it is characterised in that：The connecting tube（2）One
End and the water inlet pipe rear end（10）Connection, the connecting tube（2）The other end and the front shroud water inlet（12）Connection.
A kind of 3. Bitterling Welfare fish-eggs collection hatching apparatus according to claim 1, it is characterised in that：The gill ball（17）Including
Gill rod（26）, the gill rod（26）Uniformly it is arranged on gill spherical shell（27）Outside；The gill rod（26）Including the branchial duct（28）, the branchial duct
（28）Top is spherical for semicircle, around the branchial duct（28）Outside on middle part be equidistantly equipped with the gill lamella（29）, the gill lamella
（29）Inside for hollow structure and with the branchial duct（28）Inside communicates, the gill lamella（29）Both sides and the branchial duct（28）Outside
Equidistantly it is equipped with gill opening（30）, the branchial duct（28）Lower end vertically penetrates the gill spherical shell（27）And it is fixed on the gill spherical shell
（27）.
A kind of 4. Bitterling Welfare fish-eggs collection hatching apparatus according to claim 1, it is characterised in that：The back cover water outlet
（23）It is connected with peristaltic pump water inlet pipe, the outlet pipe rear end（11）It is connected with wriggling water pump outlet pipe.
A kind of 5. Bitterling Welfare fish-eggs collection hatching apparatus according to claim 4, it is characterised in that：The flow velocity of the peristaltic pump
For 0.5ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720511148.0U CN207305766U (en) | 2017-05-10 | 2017-05-10 | A kind of Bitterling Welfare fish-eggs gather hatching apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720511148.0U CN207305766U (en) | 2017-05-10 | 2017-05-10 | A kind of Bitterling Welfare fish-eggs gather hatching apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207305766U true CN207305766U (en) | 2018-05-04 |
Family
ID=62436959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720511148.0U Withdrawn - After Issue CN207305766U (en) | 2017-05-10 | 2017-05-10 | A kind of Bitterling Welfare fish-eggs gather hatching apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207305766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107114284A (en) * | 2017-05-10 | 2017-09-01 | 临沂大学 | A kind of Bitterling Welfare fish-eggs gather hatching apparatus |
-
2017
- 2017-05-10 CN CN201720511148.0U patent/CN207305766U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107114284A (en) * | 2017-05-10 | 2017-09-01 | 临沂大学 | A kind of Bitterling Welfare fish-eggs gather hatching apparatus |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180504 Effective date of abandoning: 20201020 |