CN2606400Y - System for distinguishing receipt - Google Patents
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- CN2606400Y CN2606400Y CN 02221663 CN02221663U CN2606400Y CN 2606400 Y CN2606400 Y CN 2606400Y CN 02221663 CN02221663 CN 02221663 CN 02221663 U CN02221663 U CN 02221663U CN 2606400 Y CN2606400 Y CN 2606400Y
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- invoice
- tax
- false distinguishing
- receiving terminal
- server
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Abstract
The utility model provides an invoice identification system. An identification server (1) is communicated with a tax-controlling collection terminal (3) through internet. When the collection terminal (3) collects money, the microprocessor transforms the data to be printed on the invoice into tax-controlling signals, works out the anti-couterfeiting identification code by calling the keys issued by the identification server (1) the very day, and prints the anti-counterfeiting identification code on the invoice. When the invoice is identified, the relevant data and the anti-counterfeiting identification code are manually input into the collection terminal (3), which transfers the data into identification request and transmit to the identification server (1). And the identification server (1) is capable of calling the key issued the very day and the relevant data in the identification request to work out a group of data. If the group of data is identical with the anti-counterfeiting identification code, the invoice is true, or vice versa.
Description
Technical field:
The utility model differentiates that with the electronic digital technology system of true from false of bills is relevant.
Technical background:
Tax revenue is the main source of state revenue and expenditure, is that country relies on political right to participate in a kind of form that national distribution of earnings obtains fiscal revenue.Tax revenue is the important process that is related to national strength, national security, national economy, also is that the important financial resources of development local economy guarantee.For present voiding invoice, open false invoice, tax loophole such as do not draw a bill; And utilize the quota invoice to draw to rob and quote tax, receipts " human feelings tax, concern tax " and wait institute to cause the state tax revenue problems of loss in a large number.Revenue departments at different levels all constantly strengthening the tax source control, strengthening the Tax Check dynamics, wish effectively to stop up tax loophole.The State Tax Administration and the Ministry of Finance rise from this year and implement in full the Golden Taxes the second stage of the project, require the VAT payer must adopt special software by the tax reciept printer prints VAT invoice of rising in value, and have strengthened the national tax and have levied the control dynamics; Along with China's tax is levied the development that deepens continuously that the keyholed back plate science and engineering is done, tax control cash receiving terminal is adopted in collection for small amount turnover tax and commerce, food and drink, amusement business tax, the realization machine is beaten general uniform invoice, progressively moved towards institutionalization, standardization in the whole nation, this is to safeguarding national interests, increasing taxes; Safeguard consumers' rights and interests; Raising taxpayer management level, the behavior of standard enterprise market competition have significance.
Adopt tax control cash receiving terminal realization machine to beat general uniform invoice, simultaneously supporting be provided with IC-card buy the management system of blank invoice, invoice parameter in real time or timesharing be transferred to the tax monitoring management center server, enter database branch family again and store, improve the former tax with foundation and levy keyholed back plate reason system.Solve integrality, authenticity that the taxpayer uses machine to beat general uniform invoice to pay taxes.
But, provide for a rainy day when adopting the new tax to levy the control techniques system, how to stop to use the other technologies means to forge invoice, then be to need aforethought major issue.For example forge tax blank invoice, the general printer that re-uses non-tax control carries out printing invoice, makes the invoice content of parameter not import tax monitoring administrative center into, breaks away from revenue department's monitoring management.To forge invoice very difficult and we will discern this class.Do not need too complicated technology and equipment because forge blank invoice, whether what businessman used is fiscal printer, also is difficult for judging with general inspection, and then can forms new tax loophole.
The utility model content:
The purpose of this utility model provides a kind ofly both to have been had the taxes such as printing general invoice and had levied keyholed back plate reason function and receiving bank's card payment transactions function, can differentiate the system by the true and false of ticket that tax control cash receiving terminal is dismissed again.In the utility model, relate to the system that differentiates true from false of bills.
The utility model is achieved in that
A kind of system that differentiates true from false of bills of the utility model is connected with tax control cash receiving terminal 3 or special-purpose false distinguishing terminal 4 by communication network 2 by the false distinguishing server 1 of tax control administrative center and forms; Tax control cash receiving terminal 3 is made up of by three buses and memory storage F, enciphering/deciphering device E, digital collection device K, display D, instruction keyboard B, code keypad C and printing equipment I microprocessor A.False distinguishing server 1 is arranged on the tax and levies the parallel server of keyholed back plate reason Center-to-Center server 5 associated or a subsystem of central server 5, comprises crypto key memory, hardware encipher machine.When tax control cash receiving terminal 3 receives cash or stamps the card gathering, its microprocessor data that printed invoice is required constitute a tax control message, call again sending for 1 same day of storing among the memory storage F and effective message authentication key MAC by the false distinguishing server, in enciphering/deciphering device E, tax control message is carried out the iterative cryptographic computing and draw one group of anti-counterfeiting mark sign indicating number of forming by long number, and it is printed on the desired location of invoice.When need are differentiated the true and false of invoice, the external connection keyboard that uses tax control cash receiving terminal 3 or special-purpose false distinguishing terminal 4 is with relevant data on the invoice and anti-counterfeiting mark sign indicating number input microprocessor A, microprocessor is formed the false distinguishing request message according to the false distinguishing message format with it, then by the communication serial port of communication protocol by terminal, through communication network 2 the false distinguishing request message is uploaded false distinguishing server 1, the center processor of false distinguishing server 1 (CPU) is read the date of printing this invoice according to the message format of message, calling system employed message authentication key on same day MAC from its crypto key memory carries out the iterative cryptographic computing to the data that constitute the false distinguishing request message and obtains one group of comparing data again.These data are identical with the anti-counterfeiting mark sign indicating number, and then invoice is true, otherwise invoice is false.
The utility model formation tax control message and the data that are printed on the invoice are trade names, the amount of money, date, businessman, transaction journal anti-counterfeiting mark sign indicating number; When tax control cash receiving terminal 3 is carried out counterfeit identifying functions, import these data on the invoice equally by keyboard, microprocessor A divides the territory with the binary numeral of these data by the related protocol bitmap, constitutes a false distinguishing request message.
The utility model message authentication key is operated by the full-time staff, hardware encipher machine at false distinguishing server 1 produces, levy keyholed back plate reason center when " registering " in 3 every days of tax control cash receiving terminal to the tax again after encrypting, the key MAC after will being encrypted by the center distributes to terminal 3 by transmission network 2.
The printing invoice keyboard of the utility model tax control terminal 3 can be simultaneously as instruction keyboard, cash receiving terminal has independently multiple task real-time operation system, determines that by the F key of instruction keyboard cash receiving terminal connects the tax and levies control program or bank card receiving procedure or invoice false distinguishing program run.
The master control borad of the utility model cash receiving terminal 3 or false distinguishing terminal 4, central server 5 is connected with communication network 2 respectively by serial communication interface, and communication network 2 is wired Local Network PSTN, ISDN, DDN, X25) or IP optical networking or wireless digital transmission network (GSM, CDMA).
The advantage and the actual effect of utility model are as follows:
1, economy of the present utility model: the progress of work of levying keyholed back plate reason central server according to the tax, the tax levy keyholed back plate reason central server when receiving the tax control message of uploading by tax control cash receiving terminal (trade name in the invoice, the amount of money, date, businessman, transaction journal number etc. expressly binary numeral and at the MAC of message afterbody code), need to use identical MAC key to described tax control message expressly binary numeral carry out informed source integrality, correctness computing checking.Then informed source is complete correct if the result of checking computing conforms to the number of message afterbody.Central server could divide its input database the family storage.The utility model directly utilize form after the computing of MAC iterative cryptographic at the MAC of message afterbody code, it is printed on separately on the invoice as the invoice anticounterfeiting identification code.So only need increase the false distinguishing software applications, just can form and depend on the tax and levy control and management system and relatively independent false distinguishing system, differentiate the true and false of invoice quickly and accurately at central server and the tax control cash receiving terminal 3 that the tax is levied in the control and management system.Do not need to build in addition independently very complicated invoice false distinguishing system, a cover investment forms two cover systems again, and not only saving great amount of investment has also increased false distinguishing reliability of system operation and integrality simultaneously.
2, reliability of the present utility model: message authentication key (messageaaauttheenticaion code described in the utility model, MAC), be to levy the full-time custodian's operation more than two of keyholed back plate reason center by the tax, the hardware encipher machine produces at random, deposits crypto key memory in the ciphertext form after encrypting.When beginning tax control cash receiving terminal each day of trade when " register " in the center, false distinguishing server in center is with encryption key mode (key encryption kek, KEK) to tax control cash receiving terminal distribution, key is stored in the storer (EEPROM) that tax control cash receiving terminal 3 can only read to write; The center is distributed to each transaction of message authentication key (MAC) of tax control cash receiving terminal and daily will changes, and every day, (MAC) key was all inequality.Thereby make steal or forge message authentication key (MAC) almost cannot, guaranteed the uniqueness and the reliability of invoice anticounterfeiting identification code like this.The accuracy and the authority of the false distinguishing of false distinguishing system have been guaranteed.
3, social benefit of the present utility model; The utility model can carry out real and fake discrimination (under normal circumstances only needing just can finish discriminating 4-8 time second) real-time, quickly and accurately to the true and false of the general invoice got by tax control cash receiving terminal, can hit the invoice false making effectively.The revenue department that cooperates local governments at all levels, the tax perfect and that protection is set up with modern high-tech means is levied control and management system.To strengthening the tax source control, improve tax revenue and levy the keyholed back plate reason, stop up and open false invoice, do not draw a bill and tax loopholes such as " human feelings taxes, concern tax ", increase tax by a relatively large margin and send out receipts and play an important role.Simultaneously also can help the taxpayer to strengthen enterprise operation and management; The behavior of standard enterprise market competition; Stop counterfeit or inferior quality goods to a certain extent, safeguard consumer's legitimate interests.
Description of drawings:
Fig. 1 is a system chart of the present utility model.
Fig. 2 is the tax control cash receiving terminal structural drawing.
Fig. 3 is a false distinguishing process flow diagram of the present utility model.
Embodiment:
The structure of system is as shown in Figure 1:
1 is the false distinguishing server
2 for communication network (comprising: DDN, X.25, PSTN, special-purpose number pass net, optical networking, digital transmitting networks such as wireless GSM, CDMA)
3 is tax control cash receiving terminal (the compatible POS machine of silver-colored tax, tax-control cash register)
4 is special-purpose false distinguishing terminal
5 levy keyholed back plate for the tax manages central server
The tax control cash receiving terminal structure is as shown in Figure 2:
A is miniature central processing unit (CPU)
B is an instruction keyboard
C is the external connection keyboard device
D is a LCD device
E is the enciphering/deciphering device
F is storage arrangement (ROM, RAM)
I is the microprinting machine
J is the IC-card reader device
K is the magnetic card digital acquisition device
The tax control cash receiving terminal 3 of false distinguishing system also can be described as silver-colored tax compatible POS (Pint of sale) machine or tax-control cash register.Be PC or special-purpose single-chip microcomputer by a specific use.Link formation by miniature central processing unit A (CPU) by three buses and memory storage F (ROM, RAM), enciphering/deciphering device E, magnetic card digital acquisition device K, IC-card reader device J, liquid crystal indicator D, printing equipment I, hardware units such as instruction keyboard device B, external connection keyboard C.Because tax control cash receiving terminal 3 has multiple task real-time operation system operating systems such as () optional LINUX, has at this software platform: the application program of removing POS machine with the payment transaction of supporting to stamp the card; Support to print the application program of general tax invoice; Support with the invoice content-encrypt after (in real time) or batch (timesharing) in due order, be uploaded to the tax by communication network and levy beyond the application program of keyholed back plate reason central server 1, also be provided with the application program of invoice false distinguishing.Thereby tax control cash receiving terminal is except that having bank card payment transaction function, print general tax invoice function, with behind institute's printed invoice content-encrypt in due order or batch, be uploaded to the tax by communication network and levy keyholed back plate reason central server, and in the central server database, divide beyond the function of family storage.Also has the function of carrying out the invoice false distinguishing.
The main false distinguishing process of tax control cash receiving terminal 3 is shown in figure three during the invoice false distinguishing: use terminal keyboard to be set and be the counterfeit identifying function program, indicate with the interface that external connection keyboard C follow procedure is set, to need the trade name on the invoice of false distinguishing with keyboard, the amount of money, date, businessman, transaction journal number and anti-counterfeiting mark number etc. (also being the data that constitute printed invoice) are input among the miniature central processing unit A (CPU) by the input method of Chinese character of setting, CPU forms the false distinguishing request message by the message format of setting agreement, and is uploaded to false distinguishing server 1 by I/O communication serial ports.
Special-purpose false distinguishing terminal 4 is the special portable formula single-chip microcomputers that only are provided with invoice false distinguishing program, is made of display, input keyboard and communication interface.
Anti-counterfeiting mark sign indicating number on the invoice, be tax control cash receiving terminal 3 by setup program with the binary numeral of the trade name in the invoice, the amount of money, date, businessman, transaction journal number or the like, in microprocessor, divide the territory by the related protocol bitmap, form a tax control message.Call message authentication key (the MeeessaageAutheenticaation Code abbreviation: MAC) among tax control cash receiving terminal (3) the storage arrangement F (EEP ROM) again, in enciphering/deciphering device E, it is carried out one group of checking mantissa code that the iterative cryptographic computing draws and invests former message ending territory, the take over party verifies the integrality and the correctness of message during for printing invoice and transmission of messages, when printed invoice it is printed on the invoice desired location and constitutes the invoice anticounterfeiting identification code.
Message authentication key (MAC) be by two full-time staff operation, hardware encipher machines produce, after encrypting, be stored in again the false distinguishing server storer, be to be used to verify whether message transfer correctly reaches the key that generates the anti-counterfeiting mark number.Levy keyholed back plate reason center when " registering " when 3 every days of tax control cash receiving terminal to the tax, the center with encryption key (key encryption kek, KEK) by transmission network 2 to terminal 3 distributions; Key all will change thereby have timeliness when distributing every day.
The tax is levied keyholed back plate reason center false distinguishing server 1, by levying the separate server (can be the subsystem that the tax is levied keyholed back plate reason central server) of keyholed back plate reason system central server associated with the tax, compositions such as hardware encipher machine, crypto key memory, the false distinguishing request message that false distinguishing server 1 is uploaded by central server acceptance, read the printing invoice date from the time domain of uploading false distinguishing request message bitmap, from crypto key memory, call the printing invoice message authentication key on the same day again, message is carried out iteration checking computing, draw the MAC code.And the MAC code compared with the anti-counterfeiting mark number in uploading message, then be true invoice if conform to, otherwise be forged bill.At last the result is passed back tax control cash receiving terminal 3 or the special-purpose false distinguishing terminal 4 of sending the false distinguishing request message.
The communication network that the false distinguishing system uses is the false distinguishing server 1 that the tax can be levied keyholed back plate reason center communicates the wired local telephone network public network PSTN, ISDN, the DDN that are connected with tax control cash receiving terminal 3 or special-purpose false distinguishing terminal 4, X.25 wait, IP optical networking, digital transmission networks such as wireless GSM, CDMA.
Use the false distinguishing system to differentiate that the method for true from false of bills is to adopt following steps successively:
The first step uses terminal keyboard that tax control cash receiving terminal (special-purpose false distinguishing terminal need not be provided with) is set to the false distinguishing program;
Second step, use terminal external connection keyboard C, interface indication by the false distinguishing program setting, with the trade name in the invoice, the amount of money, date, businessman, transaction journal number, anti-counterfeiting mark number etc. by the input method of Chinese character input microprocessor A that sets, microprocessor A presses the protocol massages form it is formed the false distinguishing request message, passes to the tax by communication network 2 and levies keyholed back plate reason center false distinguishing server 1;
The 3rd step, after the tax is levied keyholed back plate reason center false distinguishing server 1 and is received the false distinguishing request message, read the date in the false distinguishing request message message format time domain, from the crypto key memory of false distinguishing server 1, call the printing invoice message authentication key on the same day, the plaintext digital code of request message is carried out iteration checking computing, and the result compared with the anti-counterfeiting mark number in uploading message, then be true invoice if conform to, otherwise be forged bill.To verify that again operation result returns to tax control cash receiving terminal 3 that sends request message or special-purpose false distinguishing terminal 4.
In the 4th step, the checking result that tax control cash receiving terminal or special-purpose false distinguishing terminal receive is: true, pseudo-in the two one.
Carry out the false proof supporting tax invoice management system that also has with the false distinguishing system, sell administrative center and the invoice divided into is sold a little and to be levied keyholed back plate with the tax and manage central server and link mutually and form by invoice.The taxpayer applies to purchase IC-card with tax invoice and sells a purchase coil paper or the blank tax invoice of stacker shape at invoice.When the taxpayer rent IC-card when buying tax invoice once more invoice sell and a little at first IC-card inserted ticket machine (the band IC-card reads to decide the special-purpose PC of device), read and purchased invoice data in the IC-card, and send query requests to central server, use data from the data base call taxpayer's of central server individual household operation and invoice, check this taxpayer's invoice operating position, and then in IC-card, write kind and the quantity of newly purchasing invoice.
The false distinguishing message format is as follows:
Notation convention:
AC: the false distinguishing side of accepting
SW: transmission route switching centre
M: the territory that must fill in
→: transmit the territory
C9: be free territory of filling in
| The position | Data element | Data type | Value | Transmit leg and numerical value | |||
| AC | SW | Tax office | SW | ||||
| Type of message | n4 | 022 | 0210 | ||||
| Bitmap | b128 | M | M | M | M | ||
| 3 | Transaction code | n6 | 300000 | M | → | → | → |
| 7 | The transaction transmission time | n10(MMDDhh mmss) | M | → | |||
| 4 | False distinguishing invoice dealing money | n12 | Manual input | M | → | ||
| 11 | The purchase of false distinguishing invoice is borrowed name and is claimed (annotating one) | n64 | Manual input | M | → | → | → |
| 13 | The false distinguishing printing invoice date | n4(MMDD) | Manual input | M | → | → | |
| 39 | Answer back code | an2 | After tax system is calculated the MAC value according to key, if with send the MAC value identical return 00 (checking success) on the contrary then return A0 (check code mistake) | M | → | ||
| 41 | The tax control host ID | ans2 | M | → | → | ||
| 48 | False distinguishing invoice number (annotating two) | ans2..40 (LLVAR) | Manual input | M | → | → | → |
| 52 | False distinguishing invoice anticounterfeiting identification code | b64 | Manual input | M | → | ||
| 61 | Transaction lot number operator number | an..8(LLLVAR) | M | → | |||
| 128 | Message Authentication Code | b64 | C9 | C9 | C9 | C9 | |
Annotate one: this territory also may be defined as purchases credit side's title.
Annotate two: this territory also may be defined as the name of firm of printing the false distinguishing invoice.
Claims (5)
1, a kind of system that differentiates true from false of bills, it is characterized in that false distinguishing server (1) by tax control administrative center is connected with tax control cash receiving terminal (3) or special-purpose false distinguishing terminal (4) by communication network (2) forms, tax control cash receiving terminal (3) passes through three buses and memory storage (F) by microprocessor (A), enciphering/deciphering device (E), digital collection device (K), display (D), instruction keyboard (B), code keypad (C) and printing equipment (K) are formed, special-purpose false distinguishing terminal is by single-chip microcomputer, display, input media and communication interface are formed, false distinguishing server (1) is arranged on the tax and levies the parallel server of keyholed back plate reason Center-to-Center server (5) associated or a subsystem of central server (5), comprise crypto key memory, the hardware encipher machine, when tax control cash receiving terminal (3) receives cash or stamps the card gathering, its microprocessor data that printed invoice is required constitute a tax control message, call again storage in the memory storage (F) send by false distinguishing server (1) and effective message authentication key on the same day (MAC), in enciphering/deciphering device E, tax control message is carried out the iterative cryptographic computing and draw one group of anti-counterfeiting mark sign indicating number of forming by long number, and it is printed on the desired location of invoice, when need are differentiated the true and false of invoice, the external connection keyboard that uses tax control cash receiving terminal (3) or special-purpose false distinguishing terminal (4) is with related data on the invoice and anti-counterfeiting mark sign indicating number input microprocessor (A), microprocessor is formed the false distinguishing request message according to the false distinguishing message format with it, then by the communication serial port of communication protocol by terminal, through communication network (2) false distinguishing message message is uploaded false distinguishing server (1), the center processor (CPU) of false distinguishing server (1) is read the date of printing this invoice according to the message packet form, calling system employed message authentication key on the same day (MAC) from its crypto key memory carries out the iterative cryptographic computing to the data that constitute the false distinguishing request message and obtains one group of comparing data again.These group data are identical with the anti-counterfeiting mark sign indicating number, and then invoice is true, otherwise invoice is false.
2, system according to claim 1 is characterized in that constituting tax control message and the data that are printed on the invoice are trade names, the amount of money, date, businessman, transaction journal number and anti-counterfeiting mark sign indicating number; When tax control cash receiving terminal (3) is carried out counterfeit identifying function, import these data on the invoice equally by keyboard, microprocessor (A) divides the territory with the binary numeral of these data by the related protocol bitmap, constitutes a false distinguishing request message.
3, system according to claim 1, it is characterized in that the message authentication key operated by the full-time staff, hardware encipher machine at false distinguishing server (1) produces, levy keyholed back plate reason center when " registering " in tax control cash receiving terminal (3) every day to the tax again after encrypting, the key (MAC) after will being encrypted by the center passes through transmission network (2) and distributes to tax control cash receiving terminal (3).
4, system according to claim 1, the printing invoice keyboard that it is characterized in that tax control cash receiving terminal (3) can be simultaneously as instruction keyboard, cash receiving terminal has independently multiple task real-time operation system, determines that by the F key of instruction keyboard cash receiving terminal levies control program or bank card receiving procedure or invoice false distinguishing program run by the tax.
5, system according to claim 1, the master control borad that it is characterized in that cash receiving terminal (3) or false distinguishing terminal (4), central server (5) is connected with communication network (2) respectively by serial communication interface, and communication network (2) is wired Local Network (PSTN, ISDN, DDN, X25) or IP optical networking or wireless digital transmission network (GSM, CDMA).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221663 CN2606400Y (en) | 2002-02-22 | 2002-02-22 | System for distinguishing receipt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02221663 CN2606400Y (en) | 2002-02-22 | 2002-02-22 | System for distinguishing receipt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2606400Y true CN2606400Y (en) | 2004-03-10 |
Family
ID=34148992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02221663 Expired - Fee Related CN2606400Y (en) | 2002-02-22 | 2002-02-22 | System for distinguishing receipt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2606400Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751712B (en) * | 2008-11-27 | 2013-04-24 | 航天信息股份有限公司 | Centralized invoice authentication system and authentication method |
| CN103383793A (en) * | 2012-05-02 | 2013-11-06 | 深圳长城开发科技股份有限公司 | Method and system for achieving invoice identification with browser |
| CN103544439A (en) * | 2012-07-11 | 2014-01-29 | 北京旋极信息技术股份有限公司 | Embedded software for tax-control disk and tax-declaration disk |
| CN116228265A (en) * | 2023-03-24 | 2023-06-06 | 北京中诺链捷数字科技有限公司 | Invoice risk identification method, device and equipment |
-
2002
- 2002-02-22 CN CN 02221663 patent/CN2606400Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101751712B (en) * | 2008-11-27 | 2013-04-24 | 航天信息股份有限公司 | Centralized invoice authentication system and authentication method |
| CN103383793A (en) * | 2012-05-02 | 2013-11-06 | 深圳长城开发科技股份有限公司 | Method and system for achieving invoice identification with browser |
| CN103383793B (en) * | 2012-05-02 | 2016-05-25 | 深圳长城开发科技股份有限公司 | A kind of browser that utilizes is realized the method and system that true from false of bills is differentiated |
| CN103544439A (en) * | 2012-07-11 | 2014-01-29 | 北京旋极信息技术股份有限公司 | Embedded software for tax-control disk and tax-declaration disk |
| CN103544439B (en) * | 2012-07-11 | 2016-07-13 | 北京旋极信息技术股份有限公司 | Tax control tray and tax disc embedded software |
| CN116228265A (en) * | 2023-03-24 | 2023-06-06 | 北京中诺链捷数字科技有限公司 | Invoice risk identification method, device and equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |