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公开(公告)号:US2266005A
公开(公告)日:1941-12-16
申请号:US28747639
申请日:1939-07-31
Applicant: COLLIS COMPANY
Inventor: COLLIS OLIVER D , BRACE ELDRED C , THOMPSON EMERY O
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公开(公告)号:US2297289A
公开(公告)日:1942-09-29
申请号:US39728041
申请日:1941-06-09
Applicant: COLLIS COMPANY
Inventor: COLLIS OLIVER D , BRACE ELDRED C , THOMPSON EMERY O
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