CN107361614B - A kind of modified letter box arrangement - Google Patents
A kind of modified letter box arrangement Download PDFInfo
- Publication number
- CN107361614B CN107361614B CN201710781786.9A CN201710781786A CN107361614B CN 107361614 B CN107361614 B CN 107361614B CN 201710781786 A CN201710781786 A CN 201710781786A CN 107361614 B CN107361614 B CN 107361614B
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- CN
- China
- Prior art keywords
- slot
- switching slot
- face
- switching
- pinboard
- 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.)
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- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 210000001226 toe joint Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G29/00—Supports, holders, or containers for household use, not provided for in groups A47G1/00-A47G27/00 or A47G33/00
- A47G29/12—Mail or newspaper receptacles, e.g. letter-boxes; Openings in doors or the like for delivering mail or newspapers
- A47G29/1218—Post office boxes
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Supports Or Holders For Household Use (AREA)
Abstract
A kind of modified letter box arrangement, including mailbox, the sheath body that is fixedly installed at the top of the mailbox and with the matched case lid of the sheath body, the mailbox front end face is equipped with the delivery port launched for mail, the mailbox front end face above the delivery port is fixed with convex eaves board, it is provided with convex block in the sheath body, the convex block is provided with the first oblique angle face, the case lid lower end is provided with and the first matched second oblique angle in oblique angle face face, left and right equity is provided with locked groove in the sheath body inner wall, case lid upper surface center is provided with the first switching slot of oral area upward, first switching slot lower end is provided with the second switching slot, second switching slot lower end is provided with third switching slot, equity is provided with the retraction slot for communicating outer end at left and right sides of the third switching slot, pinboard is operably installed in the third switching slot.
Description
Technical field
The present invention relates to mailbox fields, and in particular to a kind of modified letter box arrangement.
Background technology
Mailbox is the mail delivery tool of most normal part in actual life, and generally mailbox cover can be all provided on mailbox, tradition
In mailbox cover be typically all be covered on mailbox and any locking structure be not set, thus be easy to cause random opening, make
It obtains mail surprisingly to lose, also has the letter box arrangement of included locking structure in existing, but its structure is cumbersome, it is complicated for operation, to normal
Postal delivery pickup operation bring great inconvenience.
Invention content
The purpose of the present invention is to provide a kind of modified letter box arrangements, can overcome the drawbacks described above of the prior art.
According to the present invention, a kind of modified letter box arrangement of apparatus of the present invention, including mailbox, it is fixedly installed on the mailbox
The sheath body at top and with the matched case lid of the sheath body, the mailbox front end face be equipped with for mail launch delivery port,
The mailbox front end face above the delivery port is fixed with convex eaves board, and convex block is provided in the sheath body, and the convex block is set
It is equipped with the first oblique angle face, the case lid lower end is provided with and first oblique angle face matched second oblique angle face, the sheath body
Left and right equity is provided with locked groove in inner wall, and case lid upper surface center is provided with the first switching slot of oral area upward, described
First switching slot lower end is provided with the second switching slot, and second switching slot lower end is provided with third switching slot, and the third turns
Equity is provided with the retraction slot for communicating outer end at left and right sides of access slot, and pinboard is operably equipped in the third switching slot,
It is equipped with rotating device between third switching slot and the pinboard, the rotating device includes steel ball and annular groove, described
Equity is provided with half arc slot at left and right sides of pinboard, and the half arc slot is towards elongation clockwise, and the half arc slot is suitable
It is gradually become shallower as on clockwise, the half arc slot end is provided with arc groove, can be operated in the second switching slot and can be upper and lower
Sliding plate is installed slidingly, the sliding plate outer end is provided with external tooth adapter ring, and second switching slot inner wall upper end is provided with
With the matched internal tooth adapter ring of the external tooth adapter ring, the sliding plate upper surface center is fixedly installed Coupling Shaft, the cunning
Fishplate bar center is additionally provided with oral area spline directed downwardly, and the spline upper end is elongated in the Coupling Shaft, the switching
Plate upper surface center is fixedly installed penetrates the spline with the matched splined shaft of the spline, the splined shaft upper end
In slot, it is fixedly installed twist-on head at the Coupling Shaft upper center, slips and is equipped with and the locked groove phase in the retraction slot
The hammerlock of cooperation.
Further technical solution, equity is provided with and connects slot in end wall before and after the retraction slot, it is described connect it is sliding in slot
Connect the block that connects for being equipped with and being fixedly connected with the hammerlock, it is described connect also to be installed in slot connect block conflict with described
First spring element, first spring element is to will be in hammerlock inner end top pressure to the half arc slot.
Further technical solution, the hammerlock inner end be set as with the matched arc surface of the arc groove, it is described
Arc surface can reduce the frictional force between the half arc slot inner wall when the pinboard rotates.
Further technical solution, front and back equity is provided with the buckling groove extended up and down, the case in the sheath body inner wall
Before and after outer side of lid end wall equity be provided with elongation up and down and with the matched clamping block of the buckling groove, in the clamping block
When coordinating with the buckling groove, the hammerlock can be made to be in same vertical plane with the locked groove.
The distance of further technical solution, the locked groove to first oblique angle face is equal to the hammerlock to described second
The distance in oblique angle face, thus when first oblique angle face and second oblique angle face coordinate, at the hammerlock and the locked groove
In in same level.
Further technical solution is installed with the second spring element between the pinboard and the sliding plate, described
Second spring element is making the external tooth adapter ring be matched with the internal tooth adapter ring the sliding upward top pressure of plate.
Further technical solution, the steel ball are set to the pinboard bottom end face, and the annular groove is set to described
Third switching slot inner bottom wall, the steel ball are penetrated in the annular groove and are rolled and be connected, and can be reduced by the steel ball described
Frictional resistance when pinboard rotates, to improve smoothness when rotation.
The beneficial effects of the invention are as follows：Due to the cooperation of the clamping block and the buckling groove, and second oblique angle face
, can be when the case lid to be put into completely in the sheath body with the cooperation in first oblique angle face, the retraction slot can be with institute
State locked groove alignment；It is inserted into the first switching slot using interior Hexagonal jacket tool and is coordinated with the twist-on head, and will be described
The downward top pressure of twist-on head makes the external tooth adapter ring be detached from the internal tooth adapter ring and coordinates, to allow the twist-on head to rotate；It is suitable
In hour hands rotation when Hexagonal jacket tool, the sliding plate rotation can be driven, due to slipping the spline in plate and the spline
Axis coordinates, and therefore, the sliding plate can drive the pinboard to rotate when rotating, during the pinboard rotation,
The inner wall of the half arc slot can act on the hammerlock inner end, to which the hammerlock outboard end top pressure is penetrated the locked groove
In, when the hammerlock inner end slides into the arc groove, interior Hexagonal jacket tool is extracted upwards, the sliding plate is in institute
It states under the action of the second spring element by upward top pressure and the external tooth adapter ring coordinates again with the internal tooth adapter ring, in the hammerlock
Under the action of, the case lid is locked in sheath body, and under the action of the external tooth adapter ring and internal tooth adapter ring, can prevent institute
Pinboard is stated to rotate；Apparatus of the present invention are simple in structure, are dismounted easily, stable.
Description of the drawings
It, below will be to embodiment or existing in order to illustrate more clearly of inventive embodiments or technical solution in the prior art
Attached drawing is briefly described needed in technology description, it should be apparent that, the accompanying drawings in the following description is only to invent
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram of a modification of the present invention type letter box arrangement.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural schematic diagram of arrow direction in Fig. 2.
Fig. 4 is the structural schematic diagram of arrow direction in Fig. 3.
Fig. 5 is structural schematic diagram when pinboard turns over 90 degree clockwise in Fig. 4.
Specific implementation mode
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
This specification（Including any accessory claim, abstract and attached drawing）Disclosed in any feature, except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
As shown in Figs. 1-5, a modification of the present invention type letter box arrangement, including mailbox 1, are fixedly installed on the mailbox 1
The sheath body 10 at top and with 10 matched case lid 20 of the sheath body, 1 front end face of the mailbox be equipped with for mail launch
1 front end face of the mailbox of delivery port 101,101 top of the delivery port is fixed with convex eaves board 102, is set in the sheath body 10
It is equipped with convex block 12, the convex block 12 is provided with the first oblique angle face 120, and 20 lower end of the case lid is provided with and first oblique angle face
120 matched second oblique angles face 200, left and right equity is provided with locked groove 11,20 upper end of the case lid in 10 inner wall of the sheath body
The the first switching slot 21 of oral area upward is provided at Middle face, the first switching slot, 21 lower end is provided with the second switching slot 22,
The second switching slot, 22 lower end is provided with third switching slot, and third switching slot left and right sides equity, which is provided with, communicates outer end
Retraction slot, pinboard 40, the third switching slot and the pinboard 40 are operably installed in third switching slot
Between be equipped with rotating device, the rotating device includes steel ball 60 and annular groove 61, and 40 left and right sides equity of the pinboard is set
It is equipped with half arc slot 41, the half arc slot 41 is extended towards clockwise direction, and the half arc slot 41 is gradual in the clockwise direction
It shoals, half arc slot, 41 end is provided with arc groove 410, can operate and can pacify up and down slidingly in the second switching slot 22
Equipped with sliding plate 31, external tooth adapter ring is provided on 31 outer end of sliding plate, the second switching slot, 22 inner wall upper end is provided with
With the matched internal tooth adapter ring 23 of the external tooth adapter ring, 31 upper surface center of the sliding plate is fixedly installed Coupling Shaft 30,
31 center of sliding plate is additionally provided with oral area spline 32 directed downwardly, and 32 upper end of the spline is elongated to the Coupling Shaft
In 30,40 upper surface center of the pinboard is fixedly installed and 32 matched splined shaft 42 of the spline, the flower
42 upper end of key axis penetrates in the spline 32, and twist-on head 39, the contracting are fixedly installed at 30 upper center of the Coupling Shaft
Enter to slip in slot and be equipped with and 11 matched hammerlock 24 of the locked groove.
Valuably, wherein equity is provided with and connects slot 25 in end wall before and after the retraction slot, and described connect in slot 25 is slipped
Be equipped be fixedly connected with the hammerlock 24 connect block 26, it is described connect also to be installed in slot 25 connect block 26 with described
The first spring element 27 contradicted, first spring element 27 is to by 24 inner end top pressure of the hammerlock to the half arc slot 41
In.
Valuably, wherein 24 inner end of the hammerlock be set as with 410 matched arc surface of the arc groove, it is described
Arc surface can reduce the frictional force between half arc slot, 41 inner wall when the pinboard 40 rotates.
Valuably, wherein front and back equity is provided with the buckling groove extended up and down, the case lid 20 in 10 inner wall of the sheath body
Before and after outer end wall equity be provided with elongation up and down and with the matched clamping block 28 of the buckling groove, in the clamping block
28 with the buckling groove when coordinating, and the hammerlock 24 and the locked groove 11 can be made to be in same vertical plane.
Valuably, wherein the distance of the locked groove 11 to first oblique angle face 120 is equal to the hammerlock 24 to described the
The distance at two oblique angles face 200, thus when first oblique angle face 120 and second oblique angle face 200 coordinate, the hammerlock 24
It is in same level with the locked groove 11.
Valuably, wherein the second spring element 38 is installed between the pinboard 40 and the sliding plate 31, it is described
Second spring element 38 is making the external tooth adapter ring be matched with the internal tooth adapter ring 23 31 upward top pressure of the sliding plate.
Valuably, wherein the steel ball 60 is set to 40 bottom end face of the pinboard, and the annular groove 61 is set to described
Third switching slot inner bottom wall, the steel ball 60 are penetrated in the annular groove 61 and are rolled and be connected, can be subtracted by the steel ball 60
Frictional resistance when the small pinboard 40 rotates, to improve smoothness when rotation.
Case lid 20 in apparatus of the present invention in the initial state, under the action of the first spring element 27, the hammerlock
24 inner ends are by top pressure to the half arc slot 41, and 24 outboard end of the hammerlock is concordant with 20 outer end wall of the case lid；Institute
Under the action of stating the second spring element 38, the sliding plate 31 makes the external tooth adapter ring and the internal tooth adapter ring 23 by upward top pressure
It matches.
When needing to be installed to the case lid 20 in the sheath body 10, the clamping block 28 is aligned with the buckling groove,
The case lid 20 is put into the sheath body 10 again, when second oblique angle face 200 and first oblique angle face 120 coordinate
When, the retraction slot is aligned with the locked groove, then using interior Hexagonal jacket tool be inserted into it is described first switching slot 21 in
The twist-on head 39 coordinates, and by 39 downward top pressure of the twist-on head, the external tooth adapter ring is made to be detached from the internal tooth adapter ring 23
Cooperation rotates clockwise interior Hexagonal jacket tool, the interior Hexagonal jacket tool at this time to allow the twist-on head 39 to rotate
It drives the sliding plate 31 to rotate, coordinates with the splined shaft 42 due to slipping the spline 32 in plate 31, it is described sliding
Plate 31 can drive the pinboard 40 to rotate when rotating, during the pinboard 40 rotates, the half arc slot 41
Inner wall can act on 24 inner end of the hammerlock, to penetrate 24 outboard end top pressure of the hammerlock in the locked groove 11, work as institute
When stating pinboard 40 and rotating clockwise 90 degree, the hammerlock inner end slides into the arc groove 410, extract upwards at this time in
Hexagonal jacket tool, the sliding plate 31 under the action of the second spring element 38 by upward top pressure and the external tooth adapter ring with
The internal tooth adapter ring 23 coordinates again；When needing to take out the case lid 20, described first is inserted into using interior Hexagonal jacket tool
Transfer and coordinate with the twist-on head 39 in slot 21, and by 39 downward top pressure of the twist-on head, make the external tooth adapter ring with it is described interior
Toe joint circle 23 is detached from cooperation, then rotates counterclockwise the interior Hexagonal jacket, and the interior Hexagonal jacket drives the pinboard 40
It rotates counterclockwise, when the pinboard 40 rotates counterclockwise, 24 inner end of the hammerlock can be detached from the arc groove 410, and work as
When the pinboard 40 rotates counterclockwise 90 degree, under the action of the first spring element 27,24 inner end of the hammerlock is pushed up
It is pressed onto in the half arc slot 41, and 24 outboard end of the hammerlock is concordant with 20 outer end wall of the case lid, to allow the case lid
20 pull out.
The beneficial effects of the invention are as follows：Due to the cooperation of the clamping block and the buckling groove, and second oblique angle face
, can be when the case lid to be put into completely in the sheath body with the cooperation in first oblique angle face, the retraction slot can be with institute
State locked groove alignment；It is inserted into the first switching slot using interior Hexagonal jacket tool and is coordinated with the twist-on head, and will be described
The downward top pressure of twist-on head makes the external tooth adapter ring be detached from the internal tooth adapter ring and coordinates, to allow the twist-on head to rotate；It is suitable
In hour hands rotation when Hexagonal jacket tool, the sliding plate rotation can be driven, due to slipping the spline in plate and the spline
Axis coordinates, and therefore, the sliding plate can drive the pinboard to rotate when rotating, during the pinboard rotation,
The inner wall of the half arc slot can act on the hammerlock inner end, to which the hammerlock outboard end top pressure is penetrated the locked groove
In, when the hammerlock inner end slides into the arc groove, interior Hexagonal jacket tool is extracted upwards, the sliding plate is in institute
It states under the action of the second spring element by upward top pressure and the external tooth adapter ring coordinates again with the internal tooth adapter ring, in the hammerlock
Under the action of, the case lid is locked in sheath body, and under the action of the external tooth adapter ring and internal tooth adapter ring, can prevent institute
Pinboard is stated to rotate；Apparatus of the present invention are simple in structure, are dismounted easily, stable.
The above, the specific implementation mode only invented, but invent protection domain be not limited thereto, it is any without
The change or replacement that creative work is expected are crossed, should all be covered within the protection domain of invention.Therefore, the protection domain of invention
It should be determined by the scope of protection defined in the claims.
Claims (7)
1. a kind of modified letter box arrangement, including mailbox, the sheath body being fixedly installed at the top of the mailbox and with the sheath body
Matched case lid, it is characterised in that：The mailbox front end face is equipped with the delivery port launched for mail, the delivery port top
The mailbox front end face be fixed with convex eaves board, convex block is provided in the sheath body, the convex block is provided with the first oblique angle face,
The case lid lower end be provided with first oblique angle face matched second oblique angle face, left and right equity is set in the sheath body inner wall
It is equipped with locked groove, case lid upper surface center is provided with the first switching slot of oral area upward, and first switching slot lower end is set
It is equipped with the second switching slot, second switching slot lower end is provided with third switching slot, third switching slot left and right sides equity
Be provided with the retraction slot for communicating outer end, pinboard be operably installed in the third switching slot, the third switching slot with
Rotating device is equipped between the pinboard, the rotating device includes steel ball and annular groove, and the pinboard left and right sides is right
Etc. being provided with half arc slot, the half arc slot end is provided with arc groove, can operate and can slip up and down in the second switching slot
Ground is equipped with sliding plate, and the sliding plate outer end is provided with external tooth adapter ring, and second switching slot inner wall upper end is provided with and institute
The matched internal tooth adapter ring of external tooth adapter ring is stated, the sliding plate upper surface center is fixedly installed Coupling Shaft, the sliding plate
Center is additionally provided with oral area spline directed downwardly, and the spline upper end is elongated in the Coupling Shaft, on the pinboard
End face center is fixedly installed penetrates the spline with the matched splined shaft of the spline, the splined shaft upper end
In, it is fixedly installed twist-on head at the Coupling Shaft upper center, slips and is equipped with and locked groove matching in the retraction slot
The hammerlock of conjunction.
2. a kind of modified letter box arrangement according to claim 1, it is characterised in that：It is right in end wall before and after the retraction slot
Connect slot etc. being provided with, it is described connect in slot slip the block that connects being fixedly connected with the hammerlock is installed, it is described to connect in slot
It is also installed with and first spring element for connecting block conflict.
3. a kind of modified letter box arrangement according to claim 1, it is characterised in that：The hammerlock inner end be set as with
The matched arc surface of arc groove.
4. a kind of modified letter box arrangement according to claim 1, it is characterised in that：Front and back equity in the sheath body inner wall
Be provided with the buckling groove extended up and down, before and after the case lid outer end wall equity be provided with elongation up and down and with the buckling groove phase
The clamping block of cooperation.
5. a kind of modified letter box arrangement according to claim 1, it is characterised in that：The locked groove is to first oblique angle
The distance in face is equal to the hammerlock to the distance in second oblique angle face.
6. a kind of modified letter box arrangement according to claim 1, it is characterised in that：The pinboard and the sliding plate
Between be installed with the second spring element.
7. a kind of modified letter box arrangement according to claim 1, it is characterised in that：The steel ball is set to the switching
Board bottom end surface, the annular groove are set to the third switching slot inner bottom wall, and the steel ball, which is penetrated in the annular groove and rolled, matches
Close connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781786.9A CN107361614B (en) | 2017-09-02 | 2017-09-02 | A kind of modified letter box arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781786.9A CN107361614B (en) | 2017-09-02 | 2017-09-02 | A kind of modified letter box arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107361614A CN107361614A (en) | 2017-11-21 |
| CN107361614B true CN107361614B (en) | 2018-10-12 |
Family
ID=60311840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710781786.9A Active CN107361614B (en) | 2017-09-02 | 2017-09-02 | A kind of modified letter box arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107361614B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202397234U (en) * | 2011-12-29 | 2012-08-29 | 张静韬 | Anti-theft newspaper box |
| CN202681551U (en) * | 2012-05-24 | 2013-01-23 | 曹亚刚 | Letter box |
| KR20160107894A (en) * | 2015-03-06 | 2016-09-19 | 김종범 | Box for parcel delivery service |
| US9630757B1 (en) * | 2015-10-13 | 2017-04-25 | Nicholas George Capous | Self-locking parcel delivery box |
-
2017
- 2017-09-02 CN CN201710781786.9A patent/CN107361614B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202397234U (en) * | 2011-12-29 | 2012-08-29 | 张静韬 | Anti-theft newspaper box |
| CN202681551U (en) * | 2012-05-24 | 2013-01-23 | 曹亚刚 | Letter box |
| KR20160107894A (en) * | 2015-03-06 | 2016-09-19 | 김종범 | Box for parcel delivery service |
| US9630757B1 (en) * | 2015-10-13 | 2017-04-25 | Nicholas George Capous | Self-locking parcel delivery box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107361614A (en) | 2017-11-21 |
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Inventor after: Fan Cuizhen Inventor after: Huang Xianyu Inventor before: Huang Xianyu |
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Effective date of registration: 20180828 Address after: 321100 No. 45, tobacco Creek Village, Lingxi village, Lanxi, Jinhua, Zhejiang Applicant after: Fan Cuizhen Address before: 321032 33 West Zhang street, brick village, Tangya Town, Jindong District, Jinhua, Zhejiang Applicant before: Huang Xianyu |
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Effective date of registration: 20201203 Address after: 274000 interchange of Changjiang Road and Fuzhou Road, Heze Development Zone, Shandong Patentee after: SHANDONG ZHONGKENENG ARTIFICIAL ENVIRONMENT Co.,Ltd. Address before: 321100, Zhejiang Province, Jinhua City, Lanxi Province Ling Kong Township tobacco smoke Creek New District No. 45 Patentee before: Fan Cuizhen |
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Effective date of registration: 20210430 Address after: 221724 Industrial Park 6-143, Wanggou Town, Feng County, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Juxiang Electromechanical Technology Co.,Ltd. Address before: 274000 intersection of Changjiang Road and Fuzhou Road, Heze Development Zone, Shandong Province Patentee before: SHANDONG ZHONGKENENG ARTIFICIAL ENVIRONMENT Co.,Ltd. |
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Effective date of registration: 20221216 Address after: 277700 100 meters north of the intersection of Shunhe Road and Wenhe West Road, Economic Development Zone, Lanling County, Linyi City, Shandong Province Patentee after: Shandong Hoh Xili Technology Co.,Ltd. Address before: 221724 Industrial Park 6-143, Wanggou Town, Feng County, Xuzhou City, Jiangsu Province Patentee before: Xuzhou Juxiang Electromechanical Technology Co.,Ltd. |
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