CENTRALIZER WITH OPPOSING HOLLOW SPRING STRUCTURE (English)
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- New search for: ZHANG LIZHENG
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2023
- Patent / Electronic Resource
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Title:CENTRALIZER WITH OPPOSING HOLLOW SPRING STRUCTURE
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Patent number:US2023392450
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Patent applicant:
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Patent family:
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Contributors:ZHANG LIZHENG ( author ) / ZHANG WEI ( author )
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Publisher:
- New search for: Europäisches Patentamt
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Publication date:2023-12-07
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Type of media:Patent
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Type of material:Electronic Resource
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Language:English
- New search for: E21B
- Further information on International Patent Classification
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Classification:
IPC: E21B EARTH OR ROCK DRILLING, Erd- oder Gesteinsbohren -
Source: