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公开(公告)号：US1855867A
公开(公告)日：1932-04-26
申请号：US48656230
申请日：1930-10-06
Applicant: SPERRY GYROSCOPE CO INC
Inventor： EDMUND PEARSE
CPC classification number: B63B45/00 , B63B45/02 , B63B2201/08 , F21V17/02
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