CN203441456U - 用于螺杆泵水循环加热系统上的双向循环交换器 - Google Patents
用于螺杆泵水循环加热系统上的双向循环交换器 Download PDFInfo
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- CN203441456U CN203441456U CN201320466169.7U CN201320466169U CN203441456U CN 203441456 U CN203441456 U CN 203441456U CN 201320466169 U CN201320466169 U CN 201320466169U CN 203441456 U CN203441456 U CN 203441456U
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CN201320466169.7U CN203441456U (zh) | 2013-07-31 | 2013-07-31 | 用于螺杆泵水循环加热系统上的双向循环交换器 |
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CN201320466169.7U CN203441456U (zh) | 2013-07-31 | 2013-07-31 | 用于螺杆泵水循环加热系统上的双向循环交换器 |
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CN203441456U true CN203441456U (zh) | 2014-02-19 |
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CN201320466169.7U Expired - Fee Related CN203441456U (zh) | 2013-07-31 | 2013-07-31 | 用于螺杆泵水循环加热系统上的双向循环交换器 |
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Legal Events
Date | Code | Title | Description |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC (China) Limited,Tianjin Branch Patentee after: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee after: TIANJIN HEZHONGDA OIL & GAS TEST CO.,LTD. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC (China) Limited,Tianjin Branch Patentee before: CHINA NATIONAL OFFSHORE OIL Corp. Co-patentee before: TIANJIN HEZHONGDA OIL & GAS TEST CO.,LTD. |
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CP01 | Change in the name or title of a patent holder | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20210731 |
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CF01 | Termination of patent right due to non-payment of annual fee |