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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0633255 (1975-11-19) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 16 인용 특허 : 0 |
A tool for positioning and holding pipe to be laid in a ditch at a desired level while the ditch is filled partially with rock, gravel, etc. The tool comprises a rod located in a tubular member and having a pointed end extending out of the tubular member. The tubular member and rod are movable axial
A pipe holding tool comprising: an elongated tubular member, a rod having a pointed end adapted to be inserted in the ground, said rod being located in said tubular member with its pointed end extending out of one end of said tubular member, said tubular member and said rod being movable relative to
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