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1.Method of and means for maintaining desired percentages of oxygen in oxygen tents or other spaces 失效
Title translation: 在氧气帐篷或其他空间中保持氧气所需百分比的方法和方法公开(公告)号:US2818860A
公开(公告)日:1958-01-07
申请号:US54743955
申请日:1955-11-17
Applicant: OLD DOMINION RES AND DEV CORP
Inventor: HOLM CARL H , GREEN JOSEPH A , GORMAN PATRICK W
CPC classification number: A61G10/04 , G05D7/0617
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公开(公告)号:US2998009A
公开(公告)日:1961-08-29
申请号:US28963252
申请日:1952-05-23
Applicant: OLD DOMINION RES AND DEV CORP
Inventor: HOLM CARL H , ROOT III ELIHU
IPC: B63C11/24
CPC classification number: B63C11/24 , Y10T137/2506
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公开(公告)号:US2886049A
公开(公告)日:1959-05-12
申请号:US60149156
申请日:1956-08-01
Applicant: OLD DOMINION RES AND DEV CORP
Inventor: HERLUF HOLM CARL , GORMAN PATRICK W
CPC classification number: B63C11/2227 , A62B9/027 , Y10T137/2544 , Y10T137/7766
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公开(公告)号:US2818858A
公开(公告)日:1958-01-07
申请号:US41591854
申请日:1954-03-12
Applicant: OLD DOMINION RES AND DEV CORP
Inventor: HOLM CARL H
IPC: B63C11/22
CPC classification number: B63C9/125 , B63C11/02 , B63C11/2236 , B63C2011/026
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