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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0325075 (1981-11-25) |
발명자 / 주소 |
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출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 2 인용 특허 : 0 |
A threaded insert plug for at least temporarily closing an opening in an internally threaded member. The plug member comprises a right circular cylinder closed at the lower end thereof. The closing surface includes an upstanding central portion proportioned to permit the application of a wrench and
A plug for use with a mating body member and comprising in combination: (a) a generally cylindrical plug member threaded on its outer cylindrical surface; (b) a closing surface member for closing said plug member at the lower limit thereof; (c) said closing surface member including a central upward
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