CN209976517U - 一种潜油螺杆泵用泄油防砂埋装置 - Google Patents
一种潜油螺杆泵用泄油防砂埋装置 Download PDFInfo
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- CN209976517U CN209976517U CN201920854105.1U CN201920854105U CN209976517U CN 209976517 U CN209976517 U CN 209976517U CN 201920854105 U CN201920854105 U CN 201920854105U CN 209976517 U CN209976517 U CN 209976517U
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An oil drainage and sand control device for submersible screw pump Effective date of registration: 20200925 Granted publication date: 20200121 Pledgee: Shandong Yingxin Financing Guarantee Co., Ltd Pledgor: SHANDONG WEIMA PUMPS MANUFACTURING Co.,Ltd. Registration number: Y2020370000146 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210924 Granted publication date: 20200121 Pledgee: Shandong Yingxin Financing Guarantee Co., Ltd Pledgor: SHANDONG WEIMA PUMPS MANUFACTURING Co.,Ltd. Registration number: Y2020370000146 |