CN208708196U - Grafting knife - Google Patents
Grafting knife Download PDFInfo
- Publication number
- CN208708196U CN208708196U CN201821183461.7U CN201821183461U CN208708196U CN 208708196 U CN208708196 U CN 208708196U CN 201821183461 U CN201821183461 U CN 201821183461U CN 208708196 U CN208708196 U CN 208708196U
- Authority
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- China
- Prior art keywords
- shear shank
- scissors bit
- blade
- scissors
- scissor body
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- 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.)
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- 238000005452 bending Methods 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 6
- 238000007373 indentation Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000010413 gardening Methods 0.000 abstract description 2
- 238000009966 trimming Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000013138 pruning Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
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- Scissors And Nippers (AREA)
Abstract
The utility model provides a kind of grafting knife, it is related to technical field of gardening, the grafting knife includes: hinged the first scissor body and the second scissor body, first scissor body includes the first scissors bit and the first shear shank, first scissors bit is fixedly connected with the first shear shank, second scissors includes the second scissors bit and the second shear shank, and the second scissors bit is fixedly connected with the second shear shank；It is provided with the first blade on the edge of the side of first scissors bit the second scissors bit of direction, is provided with the second blade on the edge of the first scissors bit side of the second scissors bit direction；First scissors bit is provided with third blade on the edge of the side of the first blade.Grafting knife provided by the embodiment of the utility model is during carrying out tree grafting growth, trees can be trimmed roughly, and when trees carry out grafting procedures, and the cutting process of junction can be carried out to stock and scion, one knife is multi-purpose, avoids carrying around the trouble of a variety of cutters.
Description
Technical field
The utility model relates to technical field of gardening, more particularly, to a kind of grafting knife.
Background technique
With the rapid development of economic society, requirement of the people to inhabitation and surrounding enviroment is also higher and higher, now to people
Living environment for, the mating of afforestation and ambient services facility is also that people generally consider the problems of, now road
Two sides and square greening batch plantation landscape tree are being set promoting our with fresh air to play certain effect
In the wooden migration process, in order to which the transpiration of trees moisture is transported and reduced in entrucking, we trim roughly trees, at present city
The general gardens pruning knife in face is only unilaterally used for trimming leaf, when trees carry out grafting procedures, Yao Huanwei grafting knife, and the two
It varies inconvenient to use.
Utility model content
The purpose of this utility model is to provide a kind of grafting knifes, are asked with alleviating the technology that existing grafting knife has a single function
Topic.
A kind of grafting knife provided by the embodiment of the utility model, comprising: hinged the first scissor body and second is cut
Cutter hub, first scissor body include the first scissors bit and the first shear shank, and first scissors bit is fixed with the first shear shank
Connection, second scissors include the second scissors bit and the second shear shank, and second scissors bit and the second shear shank, which are fixed, to be connected
It connects；
First scissors bit is towards being provided with the first blade on the edge of the side of second scissors bit, and described second
Scissors bit is towards being provided with the second blade on the edge of first scissors bit side；
First scissors bit is provided with third blade on the edge of the side of first blade.
Further, first scissors bit and the first shear shank integrally casting shaping, second scissors bit and second
Shear shank integrally casting shaping.
Further, velcro is further fixed on first scissor body, the velcro is back-to-back velcro.
Further, spreader spring is provided between first shear shank and the second shear shank.
Further, the grafting knife includes bolt axle and locking nut, and the bolt axle includes screw rod and head, described
The outer end side of screw rod is provided with screw thread, and the head is hexagonal structure, and the screw rod of the bolt axle sequentially passes through described first
Scissor body and the second scissor body are connect with the locking nut；
It is provided on first scissor body one side opposite with second scissor body and the bolt shaft head pair
The hexagonal indentations answered；
Rotor there are two being oppositely arranged on the outer wall of the locking nut, for rotating the locking nut.
Further, the lower end of first shear shank is hinged with T shape pin, and the T shape pin includes interconnecting piece and limiting section,
Described interconnecting piece one end is connect with the middle position of the limiting section, and the lower end of the other end and second shear shank is hinged, and
The interconnecting piece is corresponding with card slot, and the length of the limiting section is greater than the width of the card slot.
Further, first scissors bit and the first shear shank are parallel, and are connected by the first bending part therebetween,
Angle of first bending part respectively between first scissors bit and the first shear shank is obtuse angle；Second scissors bit
It is parallel with the second shear shank, and connected by the second bending part therebetween, second bending part is cut with described second respectively
Angle between cutter head and the second shear shank is obtuse angle.
Further, sheath is hinged on second shear shank, the sheath includes the first side of relative spacing setting
Wall and second sidewall, the first side wall and second sidewall can rotate gear shield in the two sides of the third blade；
It is provided with stopper protrusion on first scissors bit, is provided on the first side wall or second sidewall and stops with described
The corresponding arc groove of gear protrusion, so that the sheath is rotated to stopping at the third blade of first scissors bit.
Further, non-slip rubber set is provided on first shear shank and the second shear shank.
Further, the anti-slip rubber, which is put on, is densely covered with anti-skidding salient point.
The utility model embodiment bring it is following the utility model has the advantages that
Grafting knife provided by the embodiment of the utility model, comprising: hinged the first scissor body and the second scissor body,
First scissor body includes the first scissors bit and the first shear shank, and first scissors bit is fixedly connected with the first shear shank,
Second scissors includes the second scissors bit and the second shear shank, and second scissors bit is fixedly connected with the second shear shank；Institute
The first scissors bit is stated towards being provided with the first blade, the second scissors bit direction on the edge of the side of second scissors bit
The second blade is provided on the edge of first scissors bit side；First scissors bit is backwards to the side of first blade
Edge on be provided with third blade.Operator's both hands hold the first shear shank and the second shear shank respectively, pass through the first blade
It can be used for trimming leaf with the second blade, and after one hand holds the first shear shank and the second shear shank of merging, it can be used
Third blade cuts stock and scion.Grafting knife provided by the embodiment of the utility model is carrying out tree grafting growth process
In, trees can be trimmed roughly, and when trees carry out grafting procedures, and junction can be carried out to stock and scion
Cutting process, a knife is multi-purpose, avoids carrying around the trouble of a variety of cutters.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram for the grafting knife that the utility model embodiment 1 provides；
Fig. 2 is the schematic diagram for another grafting knife that the utility model embodiment 1 provides；
Fig. 3 is the schematic diagram for the grafting knife that the utility model embodiment 2 provides；
Fig. 4 is the top view for the grafting knife that the utility model embodiment 3 provides.
Icon: the first scissor body of 100-；110- third blade；The second scissor body of 200-；300- spreader spring；400- evil spirit
Art patch；500- sheath；600- locking nut；700-T shape pin.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that such as occur term " center ", "upper", "lower", " left side ",
" right side ", "vertical", "horizontal", "inner", "outside" etc., the orientation or positional relationship of instruction are orientation based on the figure or position
Relationship is set, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning
It must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.This
Outside, such as there is term " first ", " second ", " third " are used for description purposes only, be not understood to indicate or imply relatively heavy
The property wanted.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " connected ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, it can understand that above-mentioned term is practical at this with concrete condition
Concrete meaning in novel.
The utility model provides a kind of grafting knife, and multiple embodiments are given below to grafting knife provided by the utility model
Structure be described in detail.
Embodiment 1
As shown in Figure 1, the grafting knife that the utility model embodiment 1 provides, comprising: the first hinged scissor body
100 and second scissor body 200, first scissor body 100 include the first scissors bit and the first shear shank, first scissors bit
Be fixedly connected with the first shear shank, second scissors include the second scissors bit and the second shear shank, second scissors bit with
Second shear shank is fixedly connected；First scissors bit is towards being provided with the first knife on the edge of the side of second scissors bit
Sword, second scissors bit is towards being provided with the second blade on the edge of first scissors bit side；First scissors bit
Third blade 110 is provided on the edge of the side of first blade.Operator's both hands hold the first shear shank respectively
With the second shear shank, trimming leaf can be used for by the first blade and the second blade.First shear shank and the second scissors merge
Afterwards, cutter form can be become from scissors form, in order to preferably fix the first shear shank and the second shear shank, guarantee new blade surface
Stabilization, back-to-back velcro 400 can be used in also fixed velcro 400, this velcro 400 on the first scissor body 100.Pass through
Velcro 400 winds the first shear shank and the mode of the second shear shank carries out bundled fixed.One hand holds the first scissors of merging
After handle and the second shear shank, third blade 110 can be used, stock and scion are cut.The utility model embodiment provides
Grafting knife during carrying out tree grafting growth, trees can be trimmed roughly, and trees carry out grafting procedures when, again
The cutting process of junction can be carried out to stock and scion, a knife is multi-purpose, avoids carrying around the trouble of a variety of cutters.
First scissors bit and the first shear shank integrally casting shaping, second scissors bit and the second shear shank integrally casting
Molding.The material of first scissor body 100 and the second scissor body 200 can be metal, solid durable.
Spreader spring 300 is provided between first shear shank and the second shear shank, when being cut out movement, the first scissors
Both when the subtended angle of handle and the second shear shank is too small, spreader spring 300 can make the first shear shank and the application of the second shear shank
Opposite direction movement towards each other, two when the first shear shank and excessive the second shear shank subtended angle, and spreader spring 300 again can be right
The two applies the opposite power in position towards each other, so as to so that cut out can it is laborsaving.
In order to reduce the width of grafting knife, to be convenient for carrying, the first scissors bit and the first shear shank are parallel, and the two it
Between connected by the first bending part, first bending part angle between first scissors bit and the first shear shank respectively
For obtuse angle；Second scissors bit and the second shear shank are parallel, and are connected by the second bending part therebetween, and described second is curved
Angle of the folding part respectively between second scissors bit and the second shear shank is obtuse angle.
As shown in Fig. 2, it is further, it is hinged with sheath 500 on second shear shank, is played a protective role, the shield
Set 500 includes the first side wall and second sidewall of relative spacing setting, and the first side wall and second sidewall can rotate gear shield
In the two sides of the third blade 110, third blade 110 is hidden between the first side wall and second sidewall；First scissors bit
On be provided with stopper protrusion, arc groove corresponding with the stopper protrusion is provided on the first side wall or second sidewall, with
Make to stop at the rotation to the third blade 110 of first scissors bit of sheath 500.When grafting knife is in unused state
When, grafting knife can be switched to cutter state, sheath 500 is rotated to third blade 110 then, third blade can be blocked
110, it prevents by the unexpected scuffing of third blade 110.
It is provided with non-slip rubber set on first shear shank and the second shear shank, for increasing friction.
Anti-slip rubber, which is put on, is densely covered with anti-skidding salient point, for further increasing frictional force.
Embodiment 2
As shown in figure 3, the grafting knife that the utility model embodiment 2 provides, comprising: the first hinged scissor body
100 and second scissor body 200, first scissor body 100 include the first scissors bit and the first shear shank, first scissors bit
Be fixedly connected with the first shear shank, second scissors include the second scissors bit and the second shear shank, second scissors bit with
Second shear shank is fixedly connected；First scissors bit is towards being provided with the first knife on the edge of the side of second scissors bit
Sword, second scissors bit is towards being provided with the second blade on the edge of first scissors bit side；First scissors bit
Third blade 110 is provided on the edge of the side of first blade.Operator's both hands hold the first shear shank respectively
With the second shear shank, trimming leaf can be used for by the first blade and the second blade.When by grafting knife from scissors state switch
When at cutter state, needs to merge the first scissor body 100 and the second scissor body 200 and fix, difference from Example 1 exists
In grafting knife includes bolt axle and locking nut 600, and screw shaft is exactly the hinge of the first scissor body 100 and the second scissor body 200
Spindle.The bolt axle includes screw rod and head, and the outer end side of the screw rod is provided with screw thread, and the head is hexagon knot
Structure, the screw rod of the bolt axle sequentially pass through first scissor body 100 and the second scissor body 200 and the locking nut 600
Connection；It is provided on first scissor body 100 one side opposite with second scissor body 200 and the bolt shaft head
The head of corresponding hexagonal indentations, hexagonal structure is trapped in hexagonal indentations, prevents bolt axle and the first scissor body 100
It relatively rotates, and the second scissor body 200 can be rotated relative to the first scissor body 100.And work as locking nut 600
After tightening, the second scissor body 200 of compressing is moved to the first scissor body 100, increased friction between the two, thus by the first scissors
Body 100 and the fixed locking of the second scissor body 200.After one hand holds the first shear shank and the second shear shank of merging, it can be used
Third blade 110 cuts stock and scion.Grafting knife provided by the embodiment of the utility model is carrying out tree grafting growth mistake
Cheng Zhong can trim roughly trees, and when trees carry out grafting procedures, and junction can be carried out to stock and scion
Cutting process, a knife is multi-purpose, avoids carrying around the trouble of a variety of cutters.
Further, rotor there are two being oppositely arranged on the outer wall of the locking nut 600, for rotating the locking screw
Mother 600, facilitates grafting knife to switch between scissors state and cutter state.
Embodiment 3
As shown in figure 4, the grafting knife that the utility model embodiment 3 provides, comprising: the first hinged scissor body
100 and second scissor body 200, first scissor body 100 include the first scissors bit and the first shear shank, first scissors bit
Be fixedly connected with the first shear shank, second scissors include the second scissors bit and the second shear shank, second scissors bit with
Second shear shank is fixedly connected；First scissors bit is towards being provided with the first knife on the edge of the side of second scissors bit
Sword, second scissors bit is towards being provided with the second blade on the edge of first scissors bit side；First scissors bit
Third blade 110 is provided on the edge of the side of first blade.Operator's both hands hold the first shear shank respectively
With the second shear shank, trimming leaf can be used for by the first blade and the second blade.Exist with Examples 1 and 2 difference
In the lower end of first shear shank is hinged with T shape pin 700, and the T shape pin 700 includes interconnecting piece and limiting section, the connection
Portion one end is connect with the middle position of the limiting section, and the lower end of the other end and second shear shank is hinged, and the connection
Portion is corresponding with card slot, and the length of the limiting section is greater than the width of the card slot.First shear shank and the second shear shank are merged
Afterwards, by rotating T shape pin 700, interconnecting piece can be screwed into card slot, limiting section prevents the first shear shank and the second shear shank
It separates.After one hand holds the first shear shank and the second shear shank of merging, can be used third blade 110 to stock and scion into
Row cutting.Grafting knife provided by the embodiment of the utility model can repair roughly trees during carrying out tree grafting growth
It cuts, and when trees carry out grafting procedures, and the cutting process of junction can be carried out to stock and scion, a knife is multi-purpose, avoids
The troubles of a variety of cutters of carrying.
In conclusion grafting knife provided by the embodiment of the utility model, comprising: the first hinged scissor body 100
With the second scissor body 200, first scissor body 100 include the first scissors bit and the first shear shank, first scissors bit with
First shear shank is fixedly connected, and second scissors includes the second scissors bit and the second shear shank, second scissors bit and the
Two shear shanks are fixedly connected；First scissors bit is towards being provided with the first knife on the edge of the side of second scissors bit
Sword, second scissors bit is towards being provided with the second blade on the edge of first scissors bit side；First scissors bit
Third blade 110 is provided on the edge of the side of first blade.Operator's both hands hold the first shear shank respectively
With the second shear shank, trimming leaf can be used for by the first blade and the second blade, and one hand holds the first scissors of merging
After handle and the second shear shank, third blade 110 can be used, stock and scion are cut.The utility model embodiment provides
Grafting knife during carrying out tree grafting growth, trees can be trimmed roughly, and trees carry out grafting procedures when, again
The cutting process of junction can be carried out to stock and scion, a knife is multi-purpose, avoids carrying around the trouble of a variety of cutters.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of grafting knife characterized by comprising hinged the first scissor body and the second scissor body, described first
Scissor body includes the first scissors bit and the first shear shank, and first scissors bit is fixedly connected with the first shear shank, and described second
Scissors includes the second scissors bit and the second shear shank, and second scissors bit is fixedly connected with the second shear shank；
First scissors bit is towards being provided with the first blade, second scissors on the edge of the side of second scissors bit
Head is towards being provided with the second blade on the edge of first scissors bit side；
First scissors bit is provided with third blade on the edge of the side of first blade.
2. grafting knife according to claim 1, which is characterized in that first scissors bit and the first shear shank integrally casting
Molding, second scissors bit and the second shear shank integrally casting shaping.
3. grafting knife according to claim 1, which is characterized in that be further fixed on velcro on first scissor body, institute
Stating velcro is back-to-back velcro.
4. grafting knife according to claim 1, which is characterized in that be arranged between first shear shank and the second shear shank
There is spreader spring.
5. grafting knife according to claim 1, which is characterized in that the grafting knife includes bolt axle and locking nut, institute
Stating bolt axle includes screw rod and head, and the outer end side of the screw rod is provided with screw thread, and the head is hexagonal structure, the spiral shell
The screw rod of stud shaft sequentially passes through first scissor body and the second scissor body is connect with the locking nut；
It is provided on first scissor body and the opposite one side of second scissor body corresponding with the bolt shaft head
Hexagonal indentations；
Rotor there are two being oppositely arranged on the outer wall of the locking nut, for rotating the locking nut.
6. grafting knife according to claim 1, which is characterized in that the lower end of first shear shank is hinged with T shape pin, institute
Stating T shape pin includes interconnecting piece and limiting section, and described interconnecting piece one end is connect with the middle position of the limiting section, the other end and institute
The lower end for stating the second shear shank is hinged, and the interconnecting piece is corresponding with card slot, and the length of the limiting section is greater than the card slot
Width.
7. grafting knife according to claim 1, which is characterized in that first scissors bit and the first shear shank are parallel, and
Therebetween it is connected by the first bending part, first bending part is respectively between first scissors bit and the first shear shank
Angle be obtuse angle；Second scissors bit and the second shear shank are parallel, and are connected by the second bending part therebetween, described
Angle of second bending part respectively between second scissors bit and the second shear shank is obtuse angle.
8. grafting knife according to claim 7, which is characterized in that be hinged with sheath, the shield on second shear shank
Set includes the first side wall and second sidewall of relative spacing setting, and the first side wall and second sidewall can rotate gear shield in institute
State the two sides of third blade；
It is provided with stopper protrusion on first scissors bit, is provided on the first side wall or second sidewall convex with the backstop
Corresponding arc groove is played, so that the sheath is rotated to stopping at the third blade of first scissors bit.
9. grafting knife according to claim 1, which is characterized in that be respectively provided on first shear shank and the second shear shank
There is non-slip rubber set.
10. grafting knife according to claim 9, which is characterized in that the anti-slip rubber, which is put on, is densely covered with anti-skidding salient point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821183461.7U CN208708196U (en) | 2018-07-24 | 2018-07-24 | Grafting knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821183461.7U CN208708196U (en) | 2018-07-24 | 2018-07-24 | Grafting knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208708196U true CN208708196U (en) | 2019-04-09 |
Family
ID=65974673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821183461.7U Expired - Fee Related CN208708196U (en) | 2018-07-24 | 2018-07-24 | Grafting knife |
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| Country | Link |
|---|---|
| CN (1) | CN208708196U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340945A (en) * | 2019-06-27 | 2019-10-18 | 北京大学第三医院（北京大学第三临床医学院） | A kind of historrhexis cuts |
-
2018
- 2018-07-24 CN CN201821183461.7U patent/CN208708196U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340945A (en) * | 2019-06-27 | 2019-10-18 | 北京大学第三医院（北京大学第三临床医学院） | A kind of historrhexis cuts |
| CN110340945B (en) * | 2019-06-27 | 2024-04-09 | 北京大学第三医院（北京大学第三临床医学院） | Tissue crushing scissors |
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Assignee: Nanjing soutian Data Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000201 Denomination of utility model: Grafting knife Granted publication date: 20190409 License type: Common License Record date: 20191106 Assignee: Nanjing jingyipu Photoelectric Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000200 Denomination of utility model: Grafting knife Granted publication date: 20190409 License type: Common License Record date: 20191106 Assignee: Nanjing qunyue Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000199 Denomination of utility model: Grafting knife Granted publication date: 20190409 License type: Common License Record date: 20191106 |
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