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公开(公告)号：US3244964A
公开(公告)日：1966-04-05
申请号：US17184862
申请日：1962-02-08
Applicant: CUTLER HAMMER INC
Inventor： GREENING DONALD J , GREGORY STANLEY O
IPC: G05F1/445
CPC classification number: G05F1/445
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