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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0493580 (1990-03-14) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 1 |
A gas shut-off device comprising a housing having a gas inflow hole and a gas outflow hole, the housing including therein a first shut-off valve with permanent magnets for closing and opening the gas flow passage, a partition having an opening formed therein for allowing gas to flow little by little
A gas shut-off device comprising: a housing with a gas inflow hole and a gas outflow hole, said housing including therein a first shut-off valve with permanent magnets for closing and opening the gas flow passage, a partition having an opening formed therein for allowing gas to flow little by little
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