CN300728095S - 数学棋 - Google Patents
数学棋Info
- Publication number
- CN300728095S CN300728095S CN200730097634.4F CN200730097634F CN300728095S CN 300728095 S CN300728095 S CN 300728095S CN 200730097634 F CN200730097634 F CN 200730097634F CN 300728095 S CN300728095 S CN 300728095S
- Authority
- CN
- China
- Prior art keywords
- chess
- math
- chessboard
- omit
- views
- 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.)
- Expired - Fee Related
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Abstract
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN300728095S true CN300728095S (zh) | 2008-01-02 |
Family
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Yingxu Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice |
Addressee: Li Yingxu Document name: Notification to Pay the Fees Main classification number: 21-01 |
|
| DD01 | Delivery of document by public notice |
Addressee: Shen Yang Document name: Notification to Pay the Fees Main classification number: 21-01 |
|
| DD01 | Delivery of document by public notice |
Addressee: Shen Yang Document name: Notification of Termination of Patent Right Main classification number: 21-01 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Main classification number: 21-01 Termination date: 20110730 |