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公开(公告)号:US2281919A
公开(公告)日:1942-05-05
申请号:US24418038
申请日:1938-12-06
Applicant: STANDARD OIL DEV CO
Inventor: CONNOLLY GERALD C
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公开(公告)号:US2275176A
公开(公告)日:1942-03-03
申请号:US24418138
申请日:1938-12-06
Applicant: STANDARD OIL DEV CO
Inventor: CONNOLLY GERALD C
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