CN2547905Y - 长柱塞中排气式防砂抽油泵 - Google Patents
长柱塞中排气式防砂抽油泵 Download PDFInfo
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- CN2547905Y CN2547905Y CN 02229166 CN02229166U CN2547905Y CN 2547905 Y CN2547905 Y CN 2547905Y CN 02229166 CN02229166 CN 02229166 CN 02229166 U CN02229166 U CN 02229166U CN 2547905 Y CN2547905 Y CN 2547905Y
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Application Number | Priority Date | Filing Date | Title |
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CN 02229166 CN2547905Y (zh) | 2002-04-23 | 2002-04-23 | 长柱塞中排气式防砂抽油泵 |
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CN 02229166 CN2547905Y (zh) | 2002-04-23 | 2002-04-23 | 长柱塞中排气式防砂抽油泵 |
Publications (1)
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CN2547905Y true CN2547905Y (zh) | 2003-04-30 |
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CN 02229166 Expired - Fee Related CN2547905Y (zh) | 2002-04-23 | 2002-04-23 | 长柱塞中排气式防砂抽油泵 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102619744A (zh) * | 2012-03-23 | 2012-08-01 | 李广青 | 无固定凡尔的长柱塞防砂防气防垢的管式抽油泵 |
CN102661270A (zh) * | 2012-05-21 | 2012-09-12 | 李广青 | 长柱塞防气分抽混出抽油泵 |
CN113217362A (zh) * | 2020-12-31 | 2021-08-06 | 中船重工中南装备有限责任公司 | 防砂防气的抽油泵 |
-
2002
- 2002-04-23 CN CN 02229166 patent/CN2547905Y/zh not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102619744A (zh) * | 2012-03-23 | 2012-08-01 | 李广青 | 无固定凡尔的长柱塞防砂防气防垢的管式抽油泵 |
CN102661270A (zh) * | 2012-05-21 | 2012-09-12 | 李广青 | 长柱塞防气分抽混出抽油泵 |
CN102661270B (zh) * | 2012-05-21 | 2014-10-22 | 李广青 | 长柱塞防气分抽混出抽油泵 |
CN113217362A (zh) * | 2020-12-31 | 2021-08-06 | 中船重工中南装备有限责任公司 | 防砂防气的抽油泵 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C56 | Change in the name or address of the patentee |
Owner name: CHENG QIFA Free format text: FORMER NAME OR ADDRESS: SHI ZHANJUN Owner name: SHI ZHANJUN; LIU JIANKUI; GAO HONG; XU JIAQIN; GAO Free format text: FORMER NAME OR ADDRESS: SHI ZHANJUN |
|
CP01 | Change in the name or title of a patent holder |
Patentee after: Cheng Qifa Patentee before: Shi Zhanjun |
|
CP03 | Change of name, title or address |
Designer after: Shi Zhanjun Designer after: Liu Jiankui Designer after: Gao Hong Designer after: Xu Jiaqin Designer after: Gao Licheng Designer after: State-owned No.388 Factory Designer before: Shi Zhanjun |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030430 |