CN107187221A - A kind of intelligent anti-theft prints seal - Google Patents
A kind of intelligent anti-theft prints seal Download PDFInfo
- Publication number
- CN107187221A CN107187221A CN201710270416.9A CN201710270416A CN107187221A CN 107187221 A CN107187221 A CN 107187221A CN 201710270416 A CN201710270416 A CN 201710270416A CN 107187221 A CN107187221 A CN 107187221A
- Authority
- CN
- China
- Prior art keywords
- stamp
- connecting rod
- seal
- shell
- mounting hole
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
- B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
- B41K1/02—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with one or more flat stamping surfaces having fixed images
- B41K1/04—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor with one or more flat stamping surfaces having fixed images with multiple stamping surfaces; with stamping surfaces replaceable as a whole
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
- B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
- B41K1/36—Details
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Lock And Its Accessories (AREA)
- Collating Specific Patterns (AREA)
Abstract
The present invention provides a kind of intelligent anti-theft print seal, including Shell of hand stamp and the control button, control unit, telescoping mechanism, two stamp heads, unlocked by fingerprint unit and two valves that are arranged on Shell of hand stamp；Mounting hole is provided with Shell of hand stamp, two valves are correspondingly arranged in the two ends of mounting hole, for closure or openness mounting hole；Control unit includes single-chip microcomputer and motor, and motor and control button are connected with single-chip microcomputer respectively；Unlocked by fingerprint unit is connected by single-chip microcomputer with control button, so that motor positive and negative rotation；Telescoping mechanism includes being provided with the screw thread being adapted to threaded rod in threaded rod, connecting rod and fix bar, connecting rod, so as to drive connecting rod to be moved back and forth on threaded rod；One end of connecting rod is connected with fix bar；Two stamp heads are respectively arranged at the two ends of connecting rod, and the motion of connecting rod drives two stamp heads to be moved back and forth along mounting hole.
Description
Technical field
The present invention relates to the safe preservation technology field of seal, more particularly to a kind of intelligent anti-theft print seal.
Background technology
At present substantially without any safety measure on seal body, common control of stamping is usually to be locked in a cupboard
In, it can be used as long as anyone takes seal.Due to the particularity of official seal, it there is some people or official seal used
People, steals and affixes the official stamp to reach personal purpose, the loss that can not be estimated often is brought to the department representated by this official seal, and
And it is extremely difficult tracing evidence obtaining afterwards.Some companies may possess multiple company's official seals due to needing, and therefore, usual people are
It is to be locked in the not used time drawer or safety cabinet, then be very trouble every time using must all ransack boxes and chests.Even if so,
Still guarantee of having no idea is not in afore-mentioned.
The content of the invention
It is an object of the invention to the shortcoming for overcoming prior art, there is provided a kind of intelligent anti-theft print seal.
In order to solve the above technical problems, present invention employs following technical measures：
A kind of intelligent anti-theft prints seal, including Shell of hand stamp and be arranged on the Shell of hand stamp control button, control
Unit processed, telescoping mechanism, two stamp heads, unlocked by fingerprint unit and two valves；Installation is provided with the Shell of hand stamp
Hole, two valves are correspondingly arranged in the two ends of mounting hole, for mounting hole described in closure or openness；Described control unit includes single
Piece machine and motor, motor and control button are connected with the single-chip microcomputer respectively；The unlocked by fingerprint unit passes through single-chip microcomputer
It is connected with the control button, so as to drive the motor positive and inverse to move；The telescoping mechanism include threaded rod, connecting rod and
The screw thread being adapted to the threaded rod is provided with fix bar, the connecting rod, so as to drive the connecting rod in the screw thread
Moved back and forth on bar；One end of the connecting rod is connected with the fix bar；Two stamp heads are respectively arranged at the connecting rod
Two ends, the motion of the connecting rod drives two stamp heads to be moved back and forth along the mounting hole.
The present invention can also be further perfect by following technical measures：
As a further improvement, being provided with mounting groove at the opening of the mounting hole, the valve is installed on the installation
In groove, and the valve is connected with the single chip circuit, for mounting hole described in closure or openness.
As a further improvement, being threadably secured connection between the fix bar and the stamp head.
As a further improvement, two pieces of limiting plates are provided with the threaded rod, the motion for limiting the connecting plate
Scope.
As a further improvement, when the connecting rod is moved to close to the spacing Board position of motor side or when the company
When extension bar moves to the spacing Board position away from motor side, 2/3rds of the stamp head length stretches out the mounting hole.
As a further improvement, the threaded rod be arranged in parallel with the fix bar.
As a further improvement, the Shell of hand stamp is cylindrical structure, handle is provided with the Shell of hand stamp, it is described
Handle is arranged on the side wall of the Shell of hand stamp.
As a further improvement, being symmetrically arranged with marking line and sign arrow, the mark on the Shell of hand stamp side
Timberline is used to indicate being positioned against for font on the stamp head；The stamp head when sign arrow is affixed one's seal for sign
The correct position of font.
As a further improvement, being provided with 2 control buttons on the Shell of hand stamp, 2 control buttons correspond to control respectively
Make two stamp heads.
As a further improvement, be additionally provided with the Shell of hand stamp be connected with described control unit minisize pick-up head,
Scanning means and chip, the minisize pick-up head are used to, when the motor starts to rotate, start shoot function；The scanning
Device, archive is scanned for stamp head institute lid content；The chip is used for GPS location.
Compared with prior art, the present invention has advantages below：
The present invention is connected with each other the control button, control unit, the telescopic machine that use cooperatively by being set on Shell of hand stamp
Structure, two stamp heads, unlocked by fingerprint unit and two valves, it is ensured that the safe handling of seal；By setting in the present invention
Limiting plate, limits the range of movement of connecting plate, prevents stamp head from all stretching out mounting hole, when being affixed one's seal using seal, can prevent
Stamp head is rocked；By setting minisize pick-up head to be shot on Shell of hand stamp, scanning means is scanned archive, GPS
Positioned and be unlocked by unlocked by fingerprint unit and used, the relevant information for the person of affixing one's seal can be understood at any time, it is ensured that print
The safety in utilization of chapter.
Brief description of the drawings
Accompanying drawing 1 is the phantom that a kind of intelligent anti-theft of the invention prints seal；
Accompanying drawing 2 is a kind of schematic diagram of intelligent anti-theft print seal use state one of the invention；
Accompanying drawing 3 is a kind of schematic diagram of intelligent anti-theft print seal use state two of the invention；
Accompanying drawing 4 is the stereogram that a kind of intelligent anti-theft of the invention prints seal；
Accompanying drawing 5 is the forward position of font on a kind of stamp head of intelligent anti-theft print seal of the invention towards schematic diagram；
Accompanying drawing 6 is the reverse position of font on a kind of stamp head of intelligent anti-theft print seal of the invention towards schematic diagram.
Main element symbol description
Shell of hand stamp 1
Control button 2
Telescoping mechanism 3
Stamp head 4
Unlocked by fingerprint unit 5
Valve 6
Mounting hole 11
Single-chip microcomputer 7
Motor 8
Threaded rod 31
Connecting rod 32
Fix bar 33
Mounting groove 111
Limiting plate 311
Handle 12
Indicate arrow 13
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
Fig. 1 to Fig. 6, a kind of intelligent anti-theft print seal of present invention offer, including Shell of hand stamp 1 are provided and institute is arranged at
State control button 2 on Shell of hand stamp 1, control unit, telescoping mechanism 3, two stamp heads 4, unlocked by fingerprint unit 5 and two
Valve 6；Mounting hole 11 is provided with the Shell of hand stamp 1, two valves 6 are correspondingly arranged in the two ends of mounting hole 11, for opening
Open or close the mounting hole 11；Described control unit includes single-chip microcomputer 7 and motor 8, and motor 8 and control button 2 are distinguished
It is connected with the single-chip microcomputer 7；The unlocked by fingerprint unit 5 is connected by single-chip microcomputer 7 with the control button 2, so as to drive institute
State the positive and negative rotation of motor 8；The telescoping mechanism 3 is included in threaded rod 31, connecting rod 32 and fix bar 33, the connecting rod 32
The screw thread being adapted to the threaded rod 31 is provided with, so as to drive the connecting rod 32 to be moved back and forth on the threaded rod 31；
One end of the connecting rod 32 is connected with the fix bar 33；Two stamp heads 4 are respectively arranged at the two ends of the connecting rod 32,
The motion of the connecting rod 32 drives two stamp heads 4 to be moved back and forth along the mounting hole 11.
Mounting groove 111 is provided with the opening of the mounting hole 11, the valve 6 is installed in the mounting groove 111, and
The valve 6 is connected with the circuit of single-chip microcomputer 7, so as to realize the unlatching of 6 pairs of the valve opening of mounting hole 11 or close
Close.When needing to use seal, it is necessary first to which the valve 6 is opened, the stamp head 4 can be stretched out；It need not use
When, control the valve 6 to be closed, it is therefore prevented that when not in use for a long time, to make the font on the stamp head 4 dirty.
It is solid by screw thread between the fix bar 33 and the stamp head 4 for convenience of the replacing of stamp head 4 in embodiment
Fixed connection.
Two pieces of limiting plates 311 are provided with the threaded rod 31, the range of movement for limiting the connecting rod 32 so that
The connecting rod 32 can only be moved between two pieces of limiting plates 311, prevent connecting rod 32 from departing from threaded rod 31；When the connecting rod
32 move to during close to 311 position of limiting plate of motor side or when the connecting rod 32 moves to the limiting plate of remote motor side
During 311 position, 2/3rds of the length of stamp head 4 stretches out the mounting hole 11；That a part of stamp head 4 stretched out can enter
Row is affixed one's seal, and the stamp head 4 stayed in the mounting hole 11 coordinates with the inwall of mounting hole 11, plays fixed effect, prevents
When being affixed one's seal using seal, stamp head 4 rocks.
Motor 8 is rotated, when connecting rod 32 is moved on threaded rod 31, and the threaded rod 31 is parallel with the fix bar 33 to be set
Put, it is to avoid the inwall phase mutual friction of 2 stamp heads and the mounting hole 11 so that stamp head 4 is moved in the mounting hole 11
It is more smooth.
The Shell of hand stamp 1 is to be provided with handle 12 on cylindrical structure, the Shell of hand stamp 1, and the handle 12 is set
In on the side wall of the Shell of hand stamp 1.Marking line and sign arrow 13 are symmetrically arranged with the side of Shell of hand stamp 1,
The marking line is used to indicate being positioned against for font on the stamp head 4；The sign arrow 13 is affixed one's seal when institute for sign
State the correct position of font on stamp head 4, such as Fig. 5 to 6 is that font is positioned against on stamp head 4.Hand holds handle when affixing one's seal
12,2 marking lines in side two ends can be seen when facing Shell of hand stamp 1, illustrate being positioned against just for font on stamp head 4
Front end or positive rear end, if can only see a marking line, illustrate font on stamp head 4 is positioned against skew；Further according to
The position of font on selection adjustment stamp head 4 can just be understood by indicating the direction of arrow 13, it is to avoid the seal covered on file is crooked.
Specifically, when needing to use one of seal to be affixed one's seal, pressing corresponding control button 2, connection is corresponding
Circuit, then fingerprint being unlocked by pressing is carried out by the unlocked by fingerprint unit 5, then the motor 8 and institute controlled by single-chip microcomputer 7
Valve 6 is stated to move simultaneously；Now motor 8 is rotated forward, and the connecting rod 32 is moved toward the one end open direction of the mounting hole 11, from
And drive the stamp head 4 to be moved by equidirectional；Therefore, when the stamp head 4 is toward the one end open direction of mounting hole 11
During motion, the valve 6 of correspondence mounting hole 11 one end is opened, so that the stamp head 4 is toward overhanging, according to the marking line
With being positioned against that the arrow 13 is indicated, adjust to precise angle, hold handle 12 and affixed one's seal.It is not required to after being finished when affixing one's seal
When reusing, repeat and press corresponding control button 2, the motor 8 starts reversion, the connecting rod 32 returns to two pieces of limits
Centre position between the plate 311 of position, wherein driving the stamp head 4 to bounce back inward by fix bar 33, described in 6 pairs of the valve
The opening of mounting hole 11 is closed.Same principle, when needing to use other in which seal to be affixed one's seal, is pressed corresponding
Control button 2, connects corresponding circuit, then carries out fingerprint being unlocked by pressing by the unlocked by fingerprint unit 5, then passes through single-chip microcomputer
The 7 control motors 8 are moved simultaneously with the valve 6；Now motor 8 is inverted, and the connecting rod 32 is toward the mounting hole 11
Other end opening direction is moved, so that drive the stamp head 4 to be moved by equidirectional, the valve of the correspondence other end of mounting hole 11
Open, so that the stamp head 4 is affixed one's seal toward overhanging after adjustment；When need not be reused after being finished when affixing one's seal, repeat
Corresponding control button 2 is pressed, the motor 8 starts to rotate forward, the centre that the connecting rod 32 is returned between two pieces of limiting plates 311
Position, wherein driving the stamp head 4 to bounce back inward by fix bar 33, the opening of 6 pairs of the valve mounting hole 11 is entered
Row is closed.
Wherein, coded lock is additionally provided with the Shell of hand stamp 1, the coded lock is used to work as the unlocked by fingerprint unit
The flexible of the connector is controlled when can not use.
Set to further prevent non-associate or personnel without permission from privating by printing on seal, the Shell of hand stamp 1
2 control buttons are equipped with, 2 control buttons 2 correspond to two stamp heads 4 of control respectively.Be additionally provided with the Shell of hand stamp 1 with
Minisize pick-up head, scanning means and the chip of described control unit connection, the minisize pick-up head are used for when the motor is opened
When beginning to rotate, start shoot function；The scanning means, archive is scanned for stamp head institute lid content；The chip is used
In GPS location.In a particular embodiment, plug-in card position and WiFi module are additionally provided with.Mobile phone card or storage in plug-in card position
Card is connected with the minisize pick-up head, scanning means and chip, facilitates associate to read card inside information；WiFi module is used for
Realize the transmission of real time data.
When the motor starts to rotate, illustrate that the seal prepares to enable, can now start shoot function at once, it is captured
To content synchronization be uploaded in the internet system of enterprise backend；The scanning means, is carried out for stamp head institute lid content
Scanning is achieved, and the file synchronization scanned is uploaded in the internet system of enterprise backend, and company specific people can also
According to the relevant information of scanning history file, determine whether the said firm personnel normally affix one's seal or whether be non-associate with
And personnel without permission private by printing seal, meanwhile, the scanning means connects printer, convenient to print scanned text at any time
Part；The chip is used for GPS location, in this manner it is possible to which the position of track and localization seal at any time, prevents seal to be stolen.Wherein, institute
Mobile phone A PP can be connected by stating control unit, and the use state and location status of seal are inquired about by mobile phone A PP, need to be before use
The related identification information of the upper registered users of APP.Company specific people is by enterprise backend systems or logins mobile phone A PP, or
Person scans the file achieved according to the content of shooting of the minisize pick-up head, the scanning means by reading storage card information
And the positioning function of chip, the personnel using corporate seal anywhere can be inquired any time, prevent seal to be stolen
Print.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included within the scope of protection of the invention.
Claims (10)
1. a kind of intelligent anti-theft prints seal, it is characterised in that including Shell of hand stamp and the control being arranged on the Shell of hand stamp
Button processed, control unit, telescoping mechanism, two stamp heads, unlocked by fingerprint unit and two valves；
Mounting hole is provided with the Shell of hand stamp, two valves are correspondingly arranged in the two ends of mounting hole, for closure or openness
The mounting hole；
Described control unit includes single-chip microcomputer and motor, and motor and control button are connected with the single-chip microcomputer respectively；
The unlocked by fingerprint unit is connected by single-chip microcomputer with the control button, so as to drive the motor positive and inverse to move；
The telescoping mechanism includes being provided with threaded rod, connecting rod and fix bar, the connecting rod fits with the threaded rod
The screw thread matched somebody with somebody, so as to drive the connecting rod to be moved back and forth on the threaded rod；One end of the connecting rod and the fixation
Bar is connected；Two stamp heads are respectively arranged at the two ends of the connecting rod, and the motion of the connecting rod drives two stamp head edges
The mounting hole is moved back and forth.
2. intelligent anti-theft according to claim 1 prints seal, it is characterised in that peace is provided with the opening of the mounting hole
Tankage, the valve is installed in the mounting groove, and the valve is connected with the single chip circuit, for closure or openness
The mounting hole.
3. intelligent anti-theft according to claim 1 prints seal, it is characterised in that between the fix bar and the stamp head
It is threadably secured connection.
4. intelligent anti-theft according to claim 1 prints seal, it is characterised in that be provided with the threaded rod two pieces it is spacing
Plate, the range of movement for limiting the connecting plate.
5. intelligent anti-theft according to claim 4 prints seal, it is characterised in that when the connecting rod is moved to close to motor
During the spacing Board position at end or when the connecting rod moves to the spacing Board position away from motor side, the stamp head length
2/3rds stretch out the mounting holes.
6. intelligent anti-theft according to claim 1 prints seal, it is characterised in that the threaded rod is parallel with the fix bar
Set.
7. intelligent anti-theft according to claim 1 prints seal, it is characterised in that the Shell of hand stamp is cylindrical structure,
Handle is provided with the Shell of hand stamp, the handle is arranged on the side wall of the Shell of hand stamp.
8. intelligent anti-theft according to claim 7 prints seal, it is characterised in that be symmetrical arranged on the Shell of hand stamp side
There are marking line and sign arrow, the marking line is used to indicate being positioned against for font on the stamp head；The sign arrow
Head is used for the correct position for indicating font on stamp head when affixing one's seal.
9. intelligent anti-theft according to claim 7 prints seal, it is characterised in that 2 controls are provided with the Shell of hand stamp
Button processed, 2 control buttons correspond to two stamp heads of control respectively.
10. intelligent anti-theft according to claim 1 prints seal, it is characterised in that be additionally provided with the Shell of hand stamp with
Minisize pick-up head, scanning means and the chip of described control unit connection, the minisize pick-up head are used for when the motor is opened
When beginning to rotate, start shoot function；The scanning means, archive is scanned for stamp head institute lid content；The chip is used
In GPS location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270416.9A CN107187221B (en) | 2017-04-24 | 2017-04-24 | Intelligent anti-piracy seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270416.9A CN107187221B (en) | 2017-04-24 | 2017-04-24 | Intelligent anti-piracy seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107187221A true CN107187221A (en) | 2017-09-22 |
| CN107187221B CN107187221B (en) | 2023-06-27 |
Family
ID=59873328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710270416.9A Active CN107187221B (en) | 2017-04-24 | 2017-04-24 | Intelligent anti-piracy seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107187221B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249714A (en) * | 2018-07-26 | 2019-01-22 | 河南飞龙(芜湖)汽车零部件有限公司 | A kind of double imprinting devices of auto pump seat inspection |
| CN112829481A (en) * | 2020-12-31 | 2021-05-25 | 王丽萍 | Intelligent anti-theft seal |
| CN112829480A (en) * | 2020-12-31 | 2021-05-25 | 王丽萍 | Seal anti-theft system and intelligent anti-theft seal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252106Y (en) * | 1996-01-22 | 1997-04-16 | 詹仁波 | Convenience seal |
| CN101417561A (en) * | 2008-11-12 | 2009-04-29 | 钟秋彬 | Fingerprint electric identification stamp |
| JP2010012692A (en) * | 2008-07-03 | 2010-01-21 | Max Co Ltd | Stamp |
| CN103753982A (en) * | 2014-01-17 | 2014-04-30 | 黄海飞 | High-safety seal |
| CN104553388A (en) * | 2014-12-18 | 2015-04-29 | 洛阳至圣科技有限公司 | RFID (Radio Frequency Identification Device) controlled smart official seal |
| CN104626770A (en) * | 2015-01-26 | 2015-05-20 | 洛阳至圣科技有限公司 | Intelligent common seal connected with mobile server side |
| CN204712686U (en) * | 2015-03-27 | 2015-10-21 | 刘美松 | Detachable seal |
-
2017
- 2017-04-24 CN CN201710270416.9A patent/CN107187221B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2252106Y (en) * | 1996-01-22 | 1997-04-16 | 詹仁波 | Convenience seal |
| JP2010012692A (en) * | 2008-07-03 | 2010-01-21 | Max Co Ltd | Stamp |
| CN101417561A (en) * | 2008-11-12 | 2009-04-29 | 钟秋彬 | Fingerprint electric identification stamp |
| CN103753982A (en) * | 2014-01-17 | 2014-04-30 | 黄海飞 | High-safety seal |
| CN104553388A (en) * | 2014-12-18 | 2015-04-29 | 洛阳至圣科技有限公司 | RFID (Radio Frequency Identification Device) controlled smart official seal |
| CN104626770A (en) * | 2015-01-26 | 2015-05-20 | 洛阳至圣科技有限公司 | Intelligent common seal connected with mobile server side |
| CN204712686U (en) * | 2015-03-27 | 2015-10-21 | 刘美松 | Detachable seal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249714A (en) * | 2018-07-26 | 2019-01-22 | 河南飞龙(芜湖)汽车零部件有限公司 | A kind of double imprinting devices of auto pump seat inspection |
| CN109249714B (en) * | 2018-07-26 | 2020-07-07 | 河南飞龙(芜湖)汽车零部件有限公司 | Double-cover printing device for automobile water pump seat inspection |
| CN112829481A (en) * | 2020-12-31 | 2021-05-25 | 王丽萍 | Intelligent anti-theft seal |
| CN112829480A (en) * | 2020-12-31 | 2021-05-25 | 王丽萍 | Seal anti-theft system and intelligent anti-theft seal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107187221B (en) | 2023-06-27 |
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