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公开(公告)号：US1858322A
公开(公告)日：1932-05-17
申请号：US24365827
申请日：1927-12-30
Applicant: MARTIN COOPER
Inventor： MARTIN COOPER
IPC: F02B53/00
CPC classification number: F02B53/00 , F02B2730/05 , Y02T10/17
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