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公开(公告)号:US2414760A
公开(公告)日:1947-01-21
申请号:US51670244
申请日:1944-01-01
Applicant: STANDARD OIL DEV CO
Inventor: MOTTERN HENRY O
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公开(公告)号:US2388929A
公开(公告)日:1945-11-13
申请号:US42513741
申请日:1941-12-31
Applicant: STANDARD OIL DEV CO
Inventor: MOTTERN HENRY O
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