Motor reversing switch for door openers,申请号US19280283864-传众专利搜索

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发明名称	Motor reversing switch for door openers
摘要
申请公布号	US1863922(A)	申请公布日期	1932.06.21
申请号	US19280283864	申请日期	1928.06.08
申请人	CRANE HERBERT W	发明人	CRANE HERBERT W.
分类号	H02P7/00	主分类号	H02P7/00
代理机构		代理人
主权项
地址

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