CN202837984U - Drilling well parameter monitoring system for supporting big screen projection display - Google Patents
Drilling well parameter monitoring system for supporting big screen projection display Download PDFInfo
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- CN202837984U CN202837984U CN201220415632.0U CN201220415632U CN202837984U CN 202837984 U CN202837984 U CN 202837984U CN 201220415632 U CN201220415632 U CN 201220415632U CN 202837984 U CN202837984 U CN 202837984U
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Application Number | Priority Date | Filing Date | Title |
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CN201220415632.0U CN202837984U (en) | 2012-08-21 | 2012-08-21 | Drilling well parameter monitoring system for supporting big screen projection display |
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CN201220415632.0U CN202837984U (en) | 2012-08-21 | 2012-08-21 | Drilling well parameter monitoring system for supporting big screen projection display |
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CN202837984U true CN202837984U (en) | 2013-03-27 |
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CN201220415632.0U Expired - Lifetime CN202837984U (en) | 2012-08-21 | 2012-08-21 | Drilling well parameter monitoring system for supporting big screen projection display |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: SICHUAN HONGHUA ELECTRIC CO., LTD. Free format text: FORMER NAME: CHENGDU HONGTIAN TELEX ENGINEERING CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 610036 Sichuan city of Chengdu province Jinniu District Yingbin Road Information Park Road No. 99 Patentee after: SICHUAN HONGHUA ELECTRIC Co.,Ltd. Address before: 610036 Sichuan city of Chengdu province Jinniu District Yingbin Road Information Park Road No. 99 Patentee before: CHENGDU HONGTIAN ELECTRIC DRIVE ENGINEERING Co.,Ltd. |
|
CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
CX01 | Expiry of patent term |