CN212837611U - 一种便于调节超深井钻机底座 - Google Patents
一种便于调节超深井钻机底座 Download PDFInfo
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- CN212837611U CN212837611U CN202021404806.4U CN202021404806U CN212837611U CN 212837611 U CN212837611 U CN 212837611U CN 202021404806 U CN202021404806 U CN 202021404806U CN 212837611 U CN212837611 U CN 212837611U
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Legal Events
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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 |
Denomination of utility model: A base convenient for adjusting ultra deep well drilling rig Effective date of registration: 20210908 Granted publication date: 20210330 Pledgee: Xi'an spaceflight base financing Company limited by guarantee Pledgor: Jin drill petroleum machinery Limited by Share Ltd. Registration number: Y2021610000228 |
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PE01 | Entry into force 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: 20230111 Granted publication date: 20210330 Pledgee: Xi'an spaceflight base financing Company limited by guarantee Pledgor: Jin drill petroleum machinery Limited by Share Ltd. Registration number: Y2021610000228 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right |