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公开(公告)号:US3372326A
公开(公告)日:1968-03-05
申请号:US45208365
申请日:1965-04-30
Applicant: BORIS STEFANOV
Inventor: BORIS STEFANOV
IPC: G05F1/445 , H02M1/08 , H02M7/06
CPC classification number: H02M7/066 , G05F1/445 , H02M1/081