CN217295582U - Environment-friendly packing angle bead structure - Google Patents

Environment-friendly packing angle bead structure Download PDF

Info

Publication number
CN217295582U
CN217295582U CN202220404136.9U CN202220404136U CN217295582U CN 217295582 U CN217295582 U CN 217295582U CN 202220404136 U CN202220404136 U CN 202220404136U CN 217295582 U CN217295582 U CN 217295582U
Authority
CN
China
Prior art keywords
clamping
butt joint
convex block
environment
joint part
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.)
Active
Application number
CN202220404136.9U
Other languages
Chinese (zh)
Inventor
周敏国
金鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Donna Home Furnishing Co ltd
Original Assignee
Zhejiang Donna Home Furnishing Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Donna Home Furnishing Co ltd filed Critical Zhejiang Donna Home Furnishing Co ltd
Priority to CN202220404136.9U priority Critical patent/CN217295582U/en
Priority to PCT/CN2022/093740 priority patent/WO2023159781A1/en
Application granted granted Critical
Publication of CN217295582U publication Critical patent/CN217295582U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D59/00Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling, e.g. of multilayer packaging

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)

Abstract

The utility model provides an environment-friendly packing angle bead structure belongs to angle bead board technical field for the packing. The novel corner protector solves the problems that the existing corner protector structure is not enough in connection strength, not environment-friendly and low in protection effect. This environment-friendly packing angle bead structure, including the angle bead body that can the fifty percent discount, the angle bead body comprises perpendicular backplate and horizontal backplate, form the fold line between perpendicular backplate and the horizontal backplate, it has tight butt joint portion one to press from both sides to be close to fold line position department on the perpendicular backplate, it has tight butt joint portion two to press from both sides to be close to fold line position department on the horizontal backplate, press from both sides tight butt joint portion one and press from both sides tight butt joint portion two and set up on the homonymy direction of angle bead body, after perpendicular backplate and horizontal backplate through carrying out the fifty percent discount to the fold line, press from both sides tight butt joint portion one and press from both sides tight butt joint portion two and correspond the chucking and make the angle bead body form L shape structure. The utility model has the advantages of reach effectual product edge guard action, play environmental protection result of use.

Description

Environment-friendly packing angle bead structure
Technical Field
The utility model belongs to the technical field of the scute is used in the packing, a angle bead is related to, in particular to environment-friendly packing angle bead structure.
Background
The corner protector can effectively protect the edges and corners of products in the processes of carrying, warehousing and transportation, and can reinforce the products on the tray. The existing corner protector taking protective measures on the edge of the box body has a simple structure, the strength of the corner protector clamped on the box body is not enough, and the corner protector is easy to drop off due to mistaken collision in the use process so as to lose the original protective effect; in addition, the existing corner protector is usually made of foam materials which are not environment-friendly, and can cause serious pollution to the environment.
Therefore, an environment-friendly packaging corner protection structure is designed to solve the problems.
Disclosure of Invention
The utility model aims at the above-mentioned problem that exists among the prior art, provide an environment-friendly packing angle bead structure, reach effectual product edge guard action, play the effect that the environmental protection was used.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides an environment-friendly packing angle bead structure, its characterized in that, includes the angle bead body that can counterpoint, the angle bead body constitute by perpendicular backplate and horizontal backplate, perpendicular backplate and horizontal backplate between form to the hem line, perpendicular backplate on be close to have to press from both sides tight butt joint portion one to hem line position department, the horizontal backplate on be close to have to press from both sides tight butt joint portion two to hem line position department, press from both sides tight butt joint portion one and press from both sides tight butt joint portion two and set up on the homonymy direction of angle bead body, work as perpendicular backplate and horizontal backplate are through carrying out the fifty percent discount back to the hem line, tight butt joint portion one and press from both sides tight butt joint portion two and correspond chucking and make the angle bead body form L shape structure.
In foretell environment-friendly packing angle bead structure, press from both sides tight butt joint portion one and be the F form, and should press from both sides tight butt joint portion one and have two chucking lugs of outside extension on pressing from both sides tight butt joint portion two's the terminal surface, two leave the middle part draw-in groove between the chucking lug, two leave limit portion draw-in groove one and limit portion draw-in groove two respectively between the opposite side of chucking lug and the corresponding side of perpendicular backplate.
In the above-mentioned environment-friendly packaging corner protector structure, the two clamping convex blocks are respectively a first clamping convex block and a second clamping convex block.
In a foretell environment-friendly packing angle bead structure, two terminal surfaces of pressing from both sides tight butt joint portion of tight butt joint portion have three joint lug, three on the joint lug is joint lug one, joint lug two and joint lug three respectively, joint lug one and joint lug two between leave the joint groove one that supplies chucking lug one to insert and the chucking, joint lug two and joint lug three between leave the joint groove two that supplies chucking lug two to insert and the chucking, joint lug one insert and joint in limit portion draw-in groove one, joint lug two insert and joint in the middle part draw-in groove, joint lug three insert and joint in limit portion draw-in groove two.
In the environment-friendly packaging corner protecting structure, the vertical protecting plate and the horizontal protecting plate are both provided with surface reinforcing units, and the surface reinforcing units on the vertical protecting plate and the surface reinforcing units on the horizontal protecting plate are symmetrically arranged;
the surface reinforcing unit consists of four supporting clamping columns, the supporting clamping columns are a first supporting clamping column, a second supporting clamping column, a third supporting clamping column and a fourth supporting clamping column from inside to outside in sequence, the four supporting clamping columns are connected through a supporting plate, the top surface of the first supporting clamping column is a first inclined tangent plane, the top surface of the second supporting clamping column is a second inclined tangent plane, and the first inclined tangent plane and the central line of the second inclined tangent plane are on the same horizontal line.
In the environment-friendly packaging corner protection structure, the vertical protection plate is provided with a plurality of first reinforcing blocks between the supporting clamping column and the clamping butt joint part I, the horizontal protection plate is provided with a plurality of second reinforcing blocks between the supporting clamping column and the clamping butt joint part II, the first reinforcing blocks are connected through the first reinforcing ribs, and the second reinforcing blocks are connected through the second reinforcing ribs.
Compared with the prior art, the environment-friendly packaging corner protector structure has the beneficial effects that:
1. the connection stability of the vertical guard plate and the horizontal guard plate is improved through staggered clamping connection, so that the vertical guard plate and the horizontal guard plate are clamped at the edge of a product better, and the product is protected optimally;
2. the reinforcing blocks are arranged, so that the surface of the product can be supported, and the connection reliability with the surface of the product is improved;
3. the corner protection structure is made of paper pulp products, and has the advantage of being more environment-friendly compared with materials such as foam.
Drawings
FIG. 1 is a schematic view of the environmentally friendly packaging corner protector structure before being folded in half.
Fig. 2 is a schematic view of the environment-friendly packaging corner protector structure after being folded in half.
In the figure, 1, a corner protection body; 2. a vertical guard plate; 3. a horizontal guard plate; 4. folding lines are folded; 5. clamping the first butt joint part; 6. clamping the butt joint part II; 7. clamping the first bump; 8. clamping the second bump; 9. a middle clamping groove; 10. an edge clamping groove I; 11. an edge clamping groove II; 12. clamping the first bump; 13. clamping the second bump; 14. clamping the convex block III; 15. a first clamping groove; 16. a second clamping groove; 17. supporting the first clamping column; 18. a second support clamp column; 19. supporting a third clamping column; 20. supporting a clamp column IV; 21. a first inclined tangent plane; 22. a second inclined section; 23. a first reinforcing block; 24. a second reinforcing block; 25. reinforcing ribs I; 26. and a second reinforcing rib.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the environment-friendly packaging corner protector structure comprises a corner protector body 1 capable of being folded in opposite directions, wherein the corner protector body 1 is composed of a vertical protection plate 2 and a horizontal protection plate 3, an opposite folding line 4 is formed between the vertical protection plate 2 and the horizontal protection plate 3, a first clamping butt-joint part 5 is arranged on the vertical protection plate 2 close to the opposite folding line 4, a second clamping butt-joint part 6 is arranged on the horizontal protection plate 3 close to the opposite folding line 4, the first clamping butt-joint part 5 and the second clamping butt-joint part 6 are arranged in the same side direction of the corner protector body 1, when the vertical protection plate 2 and the horizontal protection plate 3 are folded in opposite directions through the opposite folding line 4, the first clamping butt-joint part 5 and the second clamping butt-joint part 6 are clamped correspondingly to enable the corner protector body 1 to form an L-shaped structure, and the folded corner protector body 1 is compact in structure and good in clamping effect; when the product edge is clamped, the horizontal guard plate 3 can be aligned to the parallel edge of the product, the vertical guard plate 2 is folded, the horizontal guard plate 3 and the vertical guard plate 2 are clamped, and meanwhile, the vertical guard plate 2 is aligned to the vertical edge of the product, so that compact connection is completed.
In more detail, the first clamping butt joint part 5 is in an F shape, two clamping convex blocks extending outwards are arranged on the end face, facing the second clamping butt joint part 6, of the first clamping butt joint part 5, a middle clamping groove 9 is reserved between the two clamping convex blocks, and an edge clamping groove I10 and an edge clamping groove II 11 are reserved between the other side of the two clamping convex blocks and the corresponding side edge of the vertical guard plate 2 respectively; the two clamping convex blocks are respectively a clamping convex block I7 and a clamping convex block II 8, the end face, facing the clamping butt joint part I5, of the clamping butt joint part II 6 is provided with three clamping convex blocks, the three clamping convex blocks are respectively a clamping convex block I12, a clamping convex block II 13 and a clamping convex block III 14, a clamping groove I15 for the clamping convex block I7 to be connected and clamped is reserved between the clamping convex block I12 and the clamping convex block II 13, a clamping groove II 16 for the clamping convex block II 8 to be connected and clamped is reserved between the clamping convex block II 13 and the clamping convex block III 14, the clamping convex block I12 is connected and clamped in the edge clamping groove I10, the clamping convex block II 13 is connected and clamped in the middle clamping groove 9, the clamping convex block III 14 is connected and clamped in the edge clamping groove II 11, and in the opposite stacking process, the clamping convex block I12 is connected and clamped in the edge clamping groove I10; the second clamping convex block 13 is connected into and clamped in the middle clamping groove 9; the clamping convex block III 14 is connected into and clamped in the edge clamping groove II 11; on the contrary, the first clamping convex block 7 is clamped in the first clamping groove 15, the second clamping convex block 8 is clamped in the second clamping groove, the connection stability of the vertical protective plate 2 and the horizontal protective plate 3 is improved through staggered clamping connection, and therefore better clamping is in stagnation at the edge of a product, and the best protection effect is achieved on the product.
Further, the vertical guard plate 2 and the horizontal guard plate 3 are both provided with a surface reinforcing unit, the surface reinforcing unit on the vertical guard plate 2 and the surface reinforcing unit on the horizontal guard plate 3 are symmetrically arranged, each surface reinforcing unit is composed of four supporting clamping columns, the supporting clamping columns are a supporting clamping column I17, a supporting clamping column II 18, a supporting clamping column III 19 and a supporting clamping column IV 20 which are sequentially arranged from inside to outside, the four supporting clamping columns are connected through a supporting plate, the top surface of the supporting clamping column I17 is an inclined section I21, the top surface of the supporting clamping column II 18 is an inclined section II 22, the central lines of the inclined section I21 and the inclined section II 22 are in the same horizontal line, when the vertical guard plate 2 is folded, the inclined section I21 of the supporting clamping column I17 on the vertical guard plate 2 is connected with the inclined section I21 of the supporting clamping column I17 on the horizontal guard plate 3, meanwhile, the inclined section II 22 of the supporting clamping column II 18 on the vertical guard plate 2 is connected with the inclined section 22 of the supporting clamping column II 18 on the horizontal guard plate 3, the first inclined section 21 and the second inclined section 22 are more adaptive in the folding process and cannot collide; and through the surface reinforcing unit, play the stable supporting role to the side surface of product, also further prevent that angle bead body 1 from droing, improve the compactness of connecting of angle bead body 1.
It is further said that, it has a plurality of boss 23 to lie in supporting the card post and press from both sides tight first 5 between the butt joint portion on the perpendicular backplate 2, lie in supporting the card post and press from both sides tight second 6 between the butt joint portion and have a plurality of boss 24 on the horizontal backplate 3, each boss 23 links to each other through a strengthening rib 25, each boss two 24 links to each other through a strengthening rib two 26, this angle bead structure is behind the chucking, it is spacing to the further compactness in product surface through boss two 24, the compactness of connection is improved, prevent that the angle bead structure from droing.
The angle bead body 1 is formed by grouting the surface of paper pulp added with a coagulant through an aluminum film and then drying or baking the paper pulp to obtain the angle bead body 1 of a paper pulp product.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. An environment-friendly packaging corner protection structure is characterized by comprising a corner protection body (1) which can be folded, the corner protection body (1) consists of a vertical protection plate (2) and a horizontal protection plate (3), a folded line (4) is formed between the vertical guard plate (2) and the horizontal guard plate (3), a first clamping butt joint part (5) is arranged on the vertical guard plate (2) close to the position of the opposite folding line (4), a second clamping butt joint part (6) is arranged on the horizontal guard plate (3) close to the position of the opposite folding line (4), the first clamping butt joint part (5) and the second clamping butt joint part (6) are arranged on the same side direction of the corner protector body (1), after the vertical guard plate (2) and the horizontal guard plate (3) are folded in half by the folding line (4), the first clamping butt joint part (5) and the second clamping butt joint part (6) are clamped correspondingly, so that the corner protector body (1) forms an L-shaped structure.
2. The environment-friendly packaging corner protection structure as claimed in claim 1, wherein the first clamping butt joint part (5) is F-shaped, and the end face of the first clamping butt joint part (5) facing the second clamping butt joint part (6) is provided with two clamping convex blocks extending outwards, a middle clamping groove (9) is reserved between the two clamping convex blocks, and an edge clamping groove I (10) and an edge clamping groove II (11) are respectively reserved between the other side of the two clamping convex blocks and the corresponding side edge of the vertical protection plate (2).
3. The environment-friendly packaging corner protector structure according to claim 2, wherein the two clamping convex blocks are a first clamping convex block (7) and a second clamping convex block (8), respectively.
4. The environment-friendly packaging corner protector structure as claimed in claim 3, wherein the end face of the second clamping butt joint part (6) facing the first clamping butt joint part (5) is provided with three clamping convex blocks, the three clamping convex blocks are respectively a first clamping convex block (12), a second clamping convex block (13) and a third clamping convex block (14), a clamping groove I (15) for the clamping convex block I (7) to be connected and clamped is reserved between the clamping convex block I (12) and the clamping convex block II (13), a second clamping groove (16) for the second clamping convex block (8) to be connected and clamped is reserved between the second clamping convex block (13) and the third clamping convex block (14), the first clamping convex block (12) is connected into and clamped in the first edge clamping groove (10), the second clamping convex block (13) is connected and clamped in the middle clamping groove (9), the third clamping convex block (14) is connected into and clamped in the second edge clamping groove (11).
5. The environment-friendly packaging corner protection structure according to claim 1, wherein the vertical protection plate (2) and the horizontal protection plate (3) are provided with surface reinforcing units, and the surface reinforcing units on the vertical protection plate (2) and the surface reinforcing units on the horizontal protection plate (3) are symmetrically arranged;
the surface reinforcing unit constitute by four support card posts, support card post by inside outside in proper order for supporting card post (17), support card post two (18), support card post three (19) and support card post four (20), four support the card post and pass through the backup pad and link to each other, the top surface that supports card post one (17) is slope tangent plane one (21), the top surface that supports card post two (18) is slope tangent plane two (22), the central line of slope tangent plane one (21) and slope tangent plane two (22) be same water flat line.
6. The environment-friendly packaging corner protection structure as claimed in claim 5, wherein the vertical protection plate (2) is provided with a plurality of first reinforcing blocks (23) between the supporting clamping columns and the first clamping butt-joint parts (5), the horizontal protection plate (3) is provided with a plurality of second reinforcing blocks (24) between the supporting clamping columns and the second clamping butt-joint parts (6), each first reinforcing block (23) is connected through a first reinforcing rib (25), and each second reinforcing block (24) is connected through a second reinforcing rib (26).
CN202220404136.9U 2022-02-25 2022-02-25 Environment-friendly packing angle bead structure Active CN217295582U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202220404136.9U CN217295582U (en) 2022-02-25 2022-02-25 Environment-friendly packing angle bead structure
PCT/CN2022/093740 WO2023159781A1 (en) 2022-02-25 2022-05-19 Environmentally friendly corner protector structure for packaging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220404136.9U CN217295582U (en) 2022-02-25 2022-02-25 Environment-friendly packing angle bead structure

Publications (1)

Publication Number Publication Date
CN217295582U true CN217295582U (en) 2022-08-26

Family

ID=82934702

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220404136.9U Active CN217295582U (en) 2022-02-25 2022-02-25 Environment-friendly packing angle bead structure

Country Status (2)

Country Link
CN (1) CN217295582U (en)
WO (1) WO2023159781A1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2081678A (en) * 1980-08-11 1982-02-24 Trondex Ltd Folding protective corner pieces
WO1993016937A1 (en) * 1992-02-28 1993-09-02 Brødrene Hartmann A/S Packaging preform of pulp material for making a corner protector
CN2590929Y (en) * 2002-11-22 2003-12-10 潘丰益 Paper pulp forming box structure with stationary structure
JP4330570B2 (en) * 2004-09-24 2009-09-16 東興産業株式会社 Guard member for preventing breakage of concrete products
CN2801683Y (en) * 2005-07-08 2006-08-02 台技塑胶股份有限公司 Structure of packaging plate material for panel
GB0818508D0 (en) * 2008-10-09 2008-11-19 Protective Packaging Systems Ltd Packaging
CN203638381U (en) * 2013-12-29 2014-06-11 上海鄂尔特特包装技术有限公司 Novel U-type buckle corner protection plate
CN107128602A (en) * 2016-02-27 2017-09-05 东莞爱绿纸塑有限公司 A kind of Multifunction paper-pulp molding cushion pad and its application
CN214876957U (en) * 2021-01-15 2021-11-26 山西高科华杰光电科技有限公司 LED booth is apart from module angle bead

Also Published As

Publication number Publication date
WO2023159781A1 (en) 2023-08-31

Similar Documents

Publication Publication Date Title
CN103803152B (en) Packing chest
CN201614042U (en) Combined carton
CN217295582U (en) Environment-friendly packing angle bead structure
CN201890402U (en) Package box
CN213110564U (en) Multilayer ceramic plate angle bead
CN210556572U (en) Plastic uptake shield capable of reducing deformation
CN216103847U (en) Assembled heavy environment-friendly packaging box
CN209814531U (en) Novel environmental protection resistance to compression packing carton
CN212891469U (en) Combined overlapping cover carton
CN212149988U (en) Foldable protective cover
CN210479370U (en) Recyclable honeycomb carton
CN206914855U (en) A kind of Novel corrugation packing case
CN216806538U (en) Cushion packaging inner pad of mobile air conditioner
CN211242039U (en) Cavity blowing tool case and bag angle
CN206511284U (en) A kind of folding type heat insulation box
CN210259322U (en) Steering gear packing combination box capable of protecting whole periphery
CN211002305U (en) Folding type carton
CN212048485U (en) Packing box convenient to it is waterproof
CN220866126U (en) Photovoltaic module packaging corner protector
CN214241695U (en) Foldable packing box
CN210734749U (en) But cyclic utilization's express delivery packing carton
CN209366705U (en) A kind of storage type displaying case sleeve structure
CN210654018U (en) Non-glue environment-friendly packaging box
CN211593256U (en) Paper packaging structure for storing lightning arrester
CN217125686U (en) Packaging paperboard of high-efficient protection type

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant