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1.Fail safe electro-magnetic lifting device with safety-stop means 失效
Title translation: 带安全停止装置的故障安全电磁提升装置公开(公告)号:US3316514A
公开(公告)日:1967-04-25
申请号:US44333165
申请日:1965-03-29
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: RADUS RAYMOND J , SCOTT LAWRENCE R
IPC: H01F7/20
CPC classification number: H01F7/206 , H01F2007/208 , H01F2029/143 , Y10S60/911