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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0909317 (1978-05-24) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 43 인용 특허 : 1 |
In the preferred embodiment of the well bore apparatus of the present invention disclosed herein, a new and improved well tool is provided with a plurality of tool-positioning members that are pivotally coupled to the body of the tool and adapted for movement between their respective retracted and e
Well bore apparatus comprising: body means adapted for passage through a well bore; driving means including a shaft member cooperatively arranged on said body means and adapted to be selectively rotated in opposite rotational directions or to remain stationary; tool-positioning means including a too
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