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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0393918 (1995-02-24) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 37 인용 특허 : 0 |
A vacuum canister comprises a container and a lid which is provided with a large slot having centrally in the bottom thereof a retaining hole provided peripherally with ventilation holes. A soft disk member is provided such that a retaining column of the disk member is held in the retaining hole of
A vacuum canister comprising: a container having an open top; a lid joined with said open top of said container and provided with a large cavity having centrally in a bottom thereof a retaining hole which is provided peripherally with a plurality of ventilation holes; a soft disk member having a dis
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