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公开(公告)号：US1873970A
公开(公告)日：1932-08-30
申请号：US44951420
申请日：1920-05-03
Applicant: ALLIS CHALMERS MFG CO
Inventor： MARTI OTHMAR K , HAROLD WINOGRAD , STREULI WERNER R
IPC: H02H3/06
CPC classification number: H02H3/066
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