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1.Switching system comprising sequentially operated gating means 失效
Title translation: 切换系统包括顺序操作的选通装置公开(公告)号:US3021430A
公开(公告)日:1962-02-13
申请号:US5090060
申请日:1960-08-22
Applicant: VECTOR MFG COMPANY INC
Inventor: LYNCH THOMAS J
CPC classification number: H03K17/6257 , H03F3/72