CN112167803B - Special paint brush for inner wall of pipeline - Google Patents
Special paint brush for inner wall of pipeline Download PDFInfo
- Publication number
- CN112167803B CN112167803B CN202011123336.9A CN202011123336A CN112167803B CN 112167803 B CN112167803 B CN 112167803B CN 202011123336 A CN202011123336 A CN 202011123336A CN 112167803 B CN112167803 B CN 112167803B
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- Prior art keywords
- elliptical
- wall
- pipeline
- hole
- cylinder body
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
- A46B11/002—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs pressurised at moment of use manually or by powered means
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Coating Apparatus (AREA)
- Brushes (AREA)
Abstract
A special paint brush for the inner wall of a pipeline relates to a brush for the pipeline, one end of a cylinder body (3) is of a closed structure, a plastic strip breathing sheet (13) is arranged on one side of the cylinder body, bristles (4) are uniformly distributed on the outer edge surface of the cylinder body, one end of a sleeve (22) is fixedly connected with the other end of the cylinder body, the other end of the sleeve is connected with a reducing connecting pipe (24), an elliptical piston block (16) is arranged in an elliptical hole (33) in the connecting pipe, a limiting mechanism is arranged at one end of the elliptical hole, one end of a rod body (18) penetrates through a circular hole (34) of an end elliptical plate (35) at the other end of the elliptical hole and then is connected with the elliptical piston block, and a rocking handle (28) is arranged at the outer end of a rocking rod (27) at the other end of the rod body; the invention utilizes the rocking handle to drive the brush hair of the cylinder body to paint the inner wall of the pipeline, and the rod body drives the elliptical piston block to make the plastic strip-shaped breathing piece of the cylinder body supplement paint in the pipeline.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a brush for a pipeline, in particular to a paint brush special for the inner wall of the pipeline.
[ background of the invention ]
The painting operation of the inner wall of the pipeline is a very labor-consuming and time-consuming work, the mode of filling the pipeline with paint is adopted for the pipeline with a small caliber, the relative weight is also light, the mode of filling the pipeline with the paint is adopted for the inner wall painting with a large diameter, people enter the pipeline for operation, the pipeline between 10 centimeters and 35 centimeters cannot enter the pipeline, and the painting operation must be carried out by means of a lifting appliance because the pipeline is heavy and the painting operation is difficult to be carried out by using the filling mode, so that the labor is very consumed.
[ summary of the invention ]
In order to overcome the defects in the background art, the invention discloses a paint brush special for the inner wall of a pipeline, wherein a rocking handle is used for driving brush hairs of a cylinder body to brush the inner wall of the pipeline, and a rod body drives an elliptic piston block to enable a plastic strip-shaped breathing piece of the cylinder body to supplement paint in the pipeline, so that the quick paint brushing of the inner wall of the pipeline is obtained.
The technical scheme for realizing the invention is as follows:
a paint brush special for the inner wall of a pipeline comprises a cylinder body, a plastic strip breathing sheet, bristles, a sleeve, a limiting mechanism, a rod body, an elliptical piston block and a rocking handle, wherein one end of the cylinder body is of a closed structure, be equipped with the rectangular breathing piece of plastics that link up the cavity on one side of the outer fringe face of barrel, the outer fringe face evenly distributed of barrel has the brush hair, and barrel other end fixed connection sleeve pipe one end, the connecting pipe one end of undergauge is connected to the sleeve pipe other end, is equipped with the oval piston piece in the elliptical aperture in the connecting pipe, the sealing rubber circle that oval piston piece outer fringe face set up with elliptical aperture pore wall interference fit, the elliptical aperture one end of connecting pipe is equipped with elliptical piston piece stop gear, the elliptical aperture other end of connecting pipe is equipped with the tip elliptical plate, the elliptical piston piece of fixed connection behind the round hole that tip elliptical plate middle part set up is passed to body of rod one end, is equipped with the rocking handle in the rocker outer end of the body of rod other end.
The special paint brush for the inner wall of the pipeline is characterized in that a conical surface is arranged at one end of a cylinder body, an end plate is arranged at the end part of the conical surface, and the end plate forms a closed structure of the cylinder body.
The special paint brush for the inner wall of the pipeline is characterized in that a strip hole penetrating through the cavity is formed in one side of the outer edge surface of the cylinder, and four sides of the plastic strip breathing sheet are connected with the periphery of the inner wall of the cylinder at the strip hole of the cylinder through hot melting.
The special paint brush for the inner wall of the pipeline is characterized in that a plurality of convex hemispheres and concave hemispheres are distributed on the plastic strip-shaped breathing sheet, a cross-shaped gap B or a Y-shaped gap is formed in each convex hemisphere, and a cross-shaped gap A or a Y-shaped gap is formed in each concave hemisphere.
The special paint brush for the inner wall of the pipeline is characterized in that a plurality of convex hemispheres and concave hemispheres distributed on the plastic strip breathing sheet are alternately arranged.
The special paint brush for the inner wall of the pipeline is characterized in that a reducing ring is arranged at the other end of a cylinder body, a rubber sealing ring is arranged on the outer edge surface of the reducing ring, and the reducing ring is connected with a screw hole of the reducing ring after being inserted into a sleeve and penetrating through a unthreaded hole arranged at one end, close to the sleeve, of the sleeve by a plurality of screws; the limiting mechanism is pressed against one end of the elliptical hole of the connecting pipe by the reducing ring.
The special paint brush of pipeline inner wall, stop gear includes toper bowl and oval short intubate, the inner face of the excessive pipe of toper that sets up between sleeve pipe and the connecting pipe is hugged closely to the toper bowl outer wall, by the undergauge ring top on the macrostoma one end terminal surface of toper bowl, the osculum department of toper bowl is equipped with the oral area board, the oral area board pastes on the terminal surface in the excessive pipe one end of toper of connecting pipe, is equipped with the oval short intubate that corresponds the elliptical aperture on the oral area board, oval short intubate is inserted and is formed the stop gear of oval piston piece at the oral area of elliptical aperture.
The special paint brush for the inner wall of the pipeline is characterized in that annular grooves are respectively formed in the outer edge surface of the elliptic piston block close to two ends, and the inner sides of the two sealing rubber rings are respectively positioned in the two annular grooves.
The special paint brush for the inner wall of the pipeline is characterized in that a screw hole is formed in the rod body close to the other end of the rod body, a sleeve ring arranged at the inner end of a rocker is sleeved on the other end of the rod body close to the other end of the rod body, and a screw penetrates through a light hole formed in the sleeve ring and then is connected with the screw hole of the rod body.
The special paint brush for the inner wall of the pipeline is provided with a breathing sheet identification line corresponding to the plastic strip breathing sheet of the cylinder body on the rod body.
Through the above disclosure, the beneficial effects of the invention are:
according to the special paint brush for the inner wall of the pipeline, paint is poured into the cavity of the cylinder, the elliptic piston block in the sleeve connecting pipe is used for enabling the paint in the cylinder to be in a stable state, when the special paint brush is used, one end of the pipeline is plugged into the position close to the port of the other end, then the rod body reciprocates to enable the elliptic piston block to press the paint in the cylinder to supplement air into the cylinder through the cross-shaped gap A of the concave hemisphere of the plastic strip breathing piece, and the paint is extruded out of the cross-shaped gap B of the convex hemisphere, so that the cylinder can be controlled to rotate by the rocking handle, and the quick painting of the inner wall of the pipeline is further obtained; when the invention is used, the painting force is balanced and uniform, painting blind spots are rarely generated, and the invention is particularly suitable for the painting operation of the inner wall of the pipeline with the diameter of between ten centimeters and thirty-five centimeters.
[ description of the drawings ]
FIG. 1 is a perspective assembly view of the present invention;
FIG. 2 is a schematic view of the cartridge configuration of the present invention;
FIG. 3 is a schematic view of a plastic strip respiratory patch of the present invention;
FIG. 4 is a schematic perspective view of one end of the elliptical short cannula of the conical bowl of the present invention;
FIG. 5 is a schematic view of the elliptical hole structure of the connecting tube viewed at the position of the sleeve of the present invention;
FIG. 6 is a schematic perspective view of the present invention;
in the figure: 1. an end plate; 2. a conical surface; 3. a barrel; 4. brushing; 5. a strip hole; 6. a screw hole; 7. a reducing ring; 8. a rubber seal ring; 9. a concave hemisphere; 10. a cross-shaped gap A; 11. a cross-shaped gap B; 12. a convex hemisphere; 13. a plastic strip breathing sheet; 14. a conical bowl; 15. an elliptical short cannula; 16. an elliptical piston block; 17. sealing the rubber ring; 18. a rod body; 19. a screw hole; 20. a light hole; 21. a screw; 22. a sleeve; 23. a tapered transition tube; 24. a connecting pipe; 25. a collar; 26. screws; 27. a rocker; 28. a rocking handle; 29. a cavity; 30. the inner wall of the cylinder; 31. an oral plate; 32. a tube hole; 33. an elliptical hole; 34. a circular hole; 35. an end elliptical plate; 36. an end face; 37. a respiratory patch identification line.
[ detailed description ] embodiments
The present invention will be further illustrated with reference to the following examples; the following examples are not intended to limit the present invention, and are only used as a support for the implementation of the present invention, and any equivalent structure replacement within the technical framework of the present invention is included in the protection scope of the present invention;
with reference to the drawings 1-6, the paint brush special for the inner wall of the pipeline comprises a cylinder body 3, a plastic strip breathing sheet 13, bristles 4, a sleeve 22, a limiting mechanism, a rod body 18, an elliptical piston block 16 and a rocking handle 28, wherein one end of the cylinder body 3 is provided with a conical surface 2, the end part of the conical surface 2 is provided with an end plate 1, the end plate 1 forms a closed structure at one end of the cylinder body 3, one side of the outer edge surface of the cylinder body 3 is provided with a strip hole 5 penetrating through a cavity 29, and four sides of the plastic strip breathing sheet 13 are connected with the periphery of the inner wall 30 of the cylinder body at the position of the strip hole 5 of the cylinder body 3 through hot melting; the plastic strip breathing sheet 13 is distributed with a plurality of convex hemispheres 12 and concave hemispheres 9, each convex hemisphere 12 is provided with a cross gap B11 or a Y-shaped gap, each concave hemisphere 9 is provided with a cross gap A10 or a Y-shaped gap, the outer edge surface of the cylinder 3 is uniformly distributed with brush hairs 4, the other end of the cylinder 3 is provided with a reducing ring 7, the outer edge surface of the reducing ring 7 is provided with a rubber sealing ring 8, and the reducing ring 7 is connected with a screw hole 6 of the reducing ring 7 after being inserted into a sleeve 22 and penetrating through a smooth hole 20 which is arranged at one end of the sleeve 22 and is close to the sleeve 22 by a plurality of screws 21; the other end of the cylinder 3 is fixedly connected with one end of a sleeve 22, the other end of the sleeve 22 is connected with one end of a reducing connecting pipe 24, an elliptical piston block 16 is arranged in an elliptical hole 33 in the connecting pipe 24, annular grooves are respectively arranged at the positions, close to the two ends, of the outer edge surface of the elliptical piston block 16, the inner sides of two sealing rubber rings 17 are respectively positioned in the two annular grooves, the sealing rubber rings 17 arranged on the outer edge surface of the elliptical piston block 16 are in interference fit with the hole wall of the elliptical hole 33, a limiting mechanism of the elliptical piston block 16 is arranged at one end of the elliptical hole 33 of the connecting pipe 24, an end elliptical plate 35 is arranged at the other end of the elliptical hole 33 of the connecting pipe 24, one end of the rod body 18 passes through a round hole 34 arranged in the middle of the end elliptical plate 35 and then is fixedly connected with the elliptical piston block 16, a breathing piece identification line 37 corresponding to the plastic strip breathing piece 13 of the cylinder 3 is arranged on the rod body 18, a screw hole 19 is arranged at the other end, a lantern ring 25 arranged at the inner end of a rocker 27 is sleeved on the other end of the rod body 18, the screw 26 is connected with the screw hole 19 of the rod body 18 after passing through the light hole arranged on the lantern ring 25.
With reference to fig. 1, 4 or 5, the limiting mechanism includes a conical bowl 14 and an elliptical short insertion tube 15, the outer wall of the conical bowl 14 is tightly attached to the inner surface of a conical transition tube 23 arranged between a sleeve 22 and a connecting tube 24, a reducing ring 7 is supported on the end surface of the large opening end of the conical bowl 14, the conical bowl 14 of the limiting mechanism is supported on one end of an elliptical hole 33 of the connecting tube 24 by the reducing ring 7, a mouth plate 31 is arranged at the small opening of the conical bowl 14, the mouth plate 31 is attached to an end surface 36 in one end of the conical transition tube 23 of the connecting tube 24, the elliptical short insertion tube 15 corresponding to the elliptical hole 33 is arranged on the mouth plate 31, and the elliptical short insertion tube 15 is inserted into the mouth of the elliptical hole 33 to form the limiting mechanism of the elliptical piston block 16.
In the paint brush special for the inner wall of the pipeline, which is disclosed by the invention, with reference to the attached drawings 1 to 6, the plastic strip breathing sheet 13 is made of a PET or PETP material commonly used for beverage bottles, and a plurality of convex hemispheres 12 and concave hemispheres 9 distributed on the plastic strip breathing sheet 13 are alternately arranged, namely the convex hemispheres 12 and the concave hemispheres 9 distributed in a row are the convex hemispheres 12, the concave hemispheres 9, the convex hemispheres 12 and the concave hemispheres 9; the cylinder body 3, the conical bowl 14, the sleeve 22, the elliptical piston block 16, the rocker 27 and the rocking handle 28 are made of hard plastics; the rod body 18 can be made of plastic and the elliptic piston block 16 integrally, or made of a stainless steel pipe or an aluminum alloy pipe with higher hardness, and then a screw hole is arranged at one end of the rod body 18 and is connected with a cylinder screw hole arranged on the elliptic piston block 16 by a screw; the brush hair 4 on the cylinder 3 can be implanted into the implantation blind hole on the outer surface of the cylinder 3 by a brush processing hair-planting machine;
the installation process is as follows:
inserting the rod body 18 into the connecting pipe 24 from the sleeve 22 to enable the elliptical piston block 16 to be located in an elliptical hole 33 of the connecting pipe 24, then placing the conical bowl 14 on the inner surface of the conical transition pipe 23 of the sleeve 22, at the moment, inserting the elliptical short insertion pipe 15 in the middle of the small-opening-part plate 31 of the conical bowl 14 into the elliptical hole 33 of the connecting pipe 24, and at the moment, leaving a reciprocating motion space between the elliptical short insertion pipe 15 and the end elliptical plate 35 in the elliptical hole 33 for the elliptical piston block 16; then the reducing ring 7 of the cylinder 3 is inserted into the sleeve 22, the end surface of the reducing ring 7 props against the conical bowl 14, a screw 21 penetrates through the unthreaded hole 20 of the sleeve 22 to be connected with the screw hole 6 of the reducing ring 7, and then the other end of the rod body 18 is connected with the rocker 27 through a screw 26 for standby;
when the device is used, the screw 21 is taken down to separate the barrel 3 from the sleeve 22, then a proper amount of paint is poured into the barrel 3, the sleeve 22 is installed on the barrel 3 by using the screw 21, the application is conveyed into the port at one end of the pipeline by holding the rod body 18 by hand, the rod body 18 is pushed to the other end close to the pipeline, the lower surface of the long hole 5 of the barrel 3 facing the pipeline is known by observing the identification line 37 of the breathing sheet, then the pull rod body 18 is pushed by force to suck air into the cavity 29 of the barrel 3 by using the cross-shaped gap A10 of the concave hemisphere 9, the proper amount of paint is discharged from the cross-shaped gap B11 of the convex hemisphere 12, at the moment, the other hand holding the rod body 18 by one hand swings the rocking handle 28, the brush hair 4 of the barrel 3 can evenly paint on the inner wall of the pipeline, then one point of the rod body 18 is pulled out and the pull rod body 18 is pushed again by force to suck air into the cavity 29 of the barrel 3 by using the cross-shaped gap A10 of the concave hemisphere 9, a proper amount of paint is discharged from the cross-shaped gap B11 protruding out of the hemisphere 12, then the rod body 18 is held by the hand, the rocking handle 28 is shaken by the other hand, and the brush bristles 4 of the cylinder body 3 can uniformly paint the paint on the corresponding positions of the inner wall of the pipeline until the paint is completely brushed on the inner wall of the pipeline; after the use, because the structure of this application is the components of a whole that can function independently structure, dismantle and wash alright secondary use through the paint cleaner according to the reverse step when assembling.
The present invention is not described in detail in the prior art.
Claims (8)
1. The utility model provides a special paintbrush of pipeline inner wall, includes barrel (3), the rectangular breathing piece of plastics (13), brush hair (4), sleeve pipe (22), stop gear, the body of rod (18), oval piston piece (16) and rocking handle (28), characterized by: one end of the cylinder body (3) is of a closed structure, a plastic strip breathing sheet (13) penetrating through the cavity (29) is arranged on one side of the outer edge surface of the cylinder body (3), bristles (4) are uniformly distributed on the outer edge surface of the cylinder body (3), one end of a sleeve (22) is fixedly connected with the other end of the cylinder body (3), the other end of the sleeve (22) is connected with one end of a reducing connecting pipe (24), an elliptical piston block (16) is arranged in an elliptical hole (33) in the connecting pipe (24), a sealing rubber ring (17) arranged on the outer edge surface of the elliptical piston block (16) is in interference fit with the hole wall of the elliptical hole (33), one end of the elliptical hole (33) of the connecting pipe (24) is provided with a limiting mechanism of the elliptical piston block (16), the other end of the elliptical hole (33) of the connecting pipe (24) is provided with an end elliptical plate (35), one end of the rod body (18) penetrates through a round hole (34) arranged in the middle of the end elliptical plate (35) and then is fixedly connected with the elliptical piston block (16), a rocking handle (28) is arranged at the outer end of the rocking bar (27) at the other end of the rod body (18);
one side of the outer edge surface of the cylinder body (3) is provided with a long hole (5) which penetrates through the cavity (29), and the four sides of the plastic long breathing sheet (13) are connected with the periphery of the inner wall (30) of the cylinder inner wall at the position of the long hole (5) of the cylinder body (3) through hot melting;
the rod body (18) is provided with a respiratory patch identification line (37) corresponding to the plastic strip respiratory patch (13) of the cylinder body (3).
2. The special paint brush for inner wall of pipeline as claimed in claim 1, wherein: one end of the cylinder body (3) is provided with a conical surface (2), the end part of the conical surface (2) is provided with an end plate (1), and the end plate (1) forms a closed structure of the cylinder body (3).
3. The special paint brush for inner wall of pipeline as claimed in claim 1 or 2, wherein: a plurality of convex hemispheres (12) and concave hemispheres (9) are distributed on the plastic strip breathing sheet (13), a cross gap B (11) or a Y-shaped gap is arranged on each convex hemisphere (12), and a cross gap A (10) or a Y-shaped gap is arranged on each concave hemisphere (9).
4. The special paint brush for inner wall of pipeline as claimed in claim 3, wherein: the plastic strip breathing sheet (13) is provided with a plurality of convex hemispheres (12) and concave hemispheres (9) which are alternately arranged.
5. The special paint brush for inner wall of pipeline as claimed in claim 1, wherein: a reducing ring (7) is arranged at the other end of the cylinder body (3), a rubber sealing ring (8) is arranged on the outer edge surface of the reducing ring (7), and the reducing ring (7) is inserted into a sleeve (22) and then is connected with a screw hole (6) of the reducing ring (7) after penetrating through a smooth hole (20) which is arranged at one end of the sleeve (22) and is close to the sleeve (22) by a plurality of screws (21); the limiting mechanism is pressed against one end of the elliptical hole (33) of the connecting pipe (24) by the reducing ring (7).
6. The special paint brush for inner wall of pipeline as claimed in claim 5, wherein: stop gear includes toper bowl (14) and oval short intubate (15), the inner face of the excessive pipe of toper (23) that sets up between sleeve pipe (22) and connecting pipe (24) is hugged closely to toper bowl (14) outer wall, by reducing ring (7) top on the heavy mouthful one end terminal surface of toper bowl (14), the osculum department of toper bowl (14) is equipped with oral area board (31), oral area board (31) are pasted on terminal surface (36) in the excessive pipe of toper (23) one end of connecting pipe (24), be equipped with oval short intubate (15) that correspond elliptical hole (33) on oral area board (31), the stop gear of the oral area formation elliptical piston piece (16) at elliptical hole (33) is inserted in oval short intubate (15).
7. The special paint brush for inner wall of pipeline as claimed in claim 6, wherein: the outer edge surface of the elliptic piston block (16) is respectively provided with an annular groove near two ends, and the inner sides of the two sealing rubber rings (17) are respectively positioned in the two annular grooves.
8. The special paint brush for inner wall of pipeline as claimed in claim 1, wherein: a screw hole (19) is arranged at the other end of the rod body (18), a lantern ring (25) arranged at the inner end of the rocker (27) is sleeved at the other end of the rod body (18), and a screw (26) penetrates through a smooth hole arranged on the lantern ring (25) and then is connected with the screw hole (19) of the rod body (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123336.9A CN112167803B (en) | 2020-10-20 | 2020-10-20 | Special paint brush for inner wall of pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123336.9A CN112167803B (en) | 2020-10-20 | 2020-10-20 | Special paint brush for inner wall of pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112167803A CN112167803A (en) | 2021-01-05 |
| CN112167803B true CN112167803B (en) | 2022-06-07 |
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ID=73922933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011123336.9A Active CN112167803B (en) | 2020-10-20 | 2020-10-20 | Special paint brush for inner wall of pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112167803B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102578800B (en) * | 2012-03-02 | 2014-04-30 | 余玲辉 | Cleaning brush with quantitative liquid replenishing function |
| CN205379006U (en) * | 2016-02-03 | 2016-07-13 | 秦枫 | Lumen class apparatus intelligence cleaning brush |
| CN205902994U (en) * | 2016-07-06 | 2017-01-25 | 孔景润 | Integrated toothbrush |
| CN206791995U (en) * | 2017-05-12 | 2017-12-26 | 王翊嘉 | A kind of New test tube brush |
| CN209610267U (en) * | 2018-12-12 | 2019-11-12 | 宁波世家洁具有限公司 | A kind of hydrojet brush |
| CN110507073A (en) * | 2019-08-29 | 2019-11-29 | 桐城市桃花制刷有限公司 | A kind of squash type feed supplement paintbrush |
| CN110731604A (en) * | 2019-09-12 | 2020-01-31 | 潜山市志杰刷业有限公司 | Copper removing brush for gun barrel |
| CN110584312A (en) * | 2019-10-15 | 2019-12-20 | 四川共享铸造有限公司 | Brushing tool for cast-in steel pipe |
-
2020
- 2020-10-20 CN CN202011123336.9A patent/CN112167803B/en active Active
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| CN112167803A (en) | 2021-01-05 |
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Effective date of registration: 20221212 Address after: 215000 380 Tongjing North Road, Gusu District, Suzhou City, Jiangsu Province Patentee after: ZHONGYIFENG TUNNEL ENGINEERING Co.,Ltd. Address before: 657200 No.47, zhujiagou village group, Pingba village committee, Zhongtun Township, Zhenxiong County, Zhaotong City, Yunnan Province Patentee before: Zhang Jun |
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