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公开(公告)号:US3278725A
公开(公告)日:1966-10-11
申请号:US22067962
申请日:1962-08-31
Applicant: PRESIN CO INC
Inventor: OLE GUNST
IPC: G06M1/02 , G06M1/04 , G06M1/10
CPC classification number: G06M1/044 , G06M1/02 , G06M1/104