CN204252830U - 一种具有料门保护装置的cfg钻头 - Google Patents
一种具有料门保护装置的cfg钻头 Download PDFInfo
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- CN204252830U CN204252830U CN201420657898.5U CN201420657898U CN204252830U CN 204252830 U CN204252830 U CN 204252830U CN 201420657898 U CN201420657898 U CN 201420657898U CN 204252830 U CN204252830 U CN 204252830U
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- bin gate
- drill bit
- spring detent
- screens
- cfg
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Application Number | Priority Date | Filing Date | Title |
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CN201420657898.5U CN204252830U (zh) | 2014-11-06 | 2014-11-06 | 一种具有料门保护装置的cfg钻头 |
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CN201420657898.5U CN204252830U (zh) | 2014-11-06 | 2014-11-06 | 一种具有料门保护装置的cfg钻头 |
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CN204252830U true CN204252830U (zh) | 2015-04-08 |
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CN201420657898.5U Expired - Fee Related CN204252830U (zh) | 2014-11-06 | 2014-11-06 | 一种具有料门保护装置的cfg钻头 |
Country Status (1)
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CN (1) | CN204252830U (zh) |
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2014
- 2014-11-06 CN CN201420657898.5U patent/CN204252830U/zh not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20161214 Address after: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83 Patentee after: BEIJING AEROSPACE GEOTECHNICAL ENGINEERING INSTITUTE Co.,Ltd. Patentee after: China Aerospace Construction Group Co.,Ltd. Patentee after: BEIJING AEROSPACE FOUNDATION ENGINEERING Co.,Ltd. Address before: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83 Patentee before: BEIJING AEROSPACE GEOTECHNICAL ENGINEERING INSTITUTE Co.,Ltd. Patentee before: China Aerospace Construction Group Co.,Ltd. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83 Co-patentee after: China Aerospace Construction Group Co.,Ltd. Patentee after: SPACEFLIGHT BUILDING DESIGN RESEARCH INSTITUTE Co.,Ltd. Co-patentee after: BEIJING AEROSPACE FOUNDATION ENGINEERING Co.,Ltd. Address before: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83 Co-patentee before: China Aerospace Construction Group Co.,Ltd. Patentee before: BEIJING AEROSPACE GEOTECHNICAL ENGINEERING INSTITUTE Co.,Ltd. Co-patentee before: BEIJING AEROSPACE FOUNDATION ENGINEERING Co.,Ltd. |
|
CP01 | Change in the name or title of a patent holder | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180307 Address after: 100071 Beijing city Fengtai District watch Dan No. four, No. 6 Patentee after: BEIJING AEROSPACE FOUNDATION ENGINEERING Co.,Ltd. Address before: 100070 Beijing West Fourth Ring Road, Fengtai District, No. 83 Co-patentee before: China Aerospace Construction Group Co.,Ltd. Patentee before: SPACEFLIGHT BUILDING DESIGN RESEARCH INSTITUTE Co.,Ltd. Co-patentee before: BEIJING AEROSPACE FOUNDATION ENGINEERING Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20191106 |
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CF01 | Termination of patent right due to non-payment of annual fee |