Combined door knocker and switch,申请号US19280254592-传众专利搜索

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法人/股东/高管

发明名称	Combined door knocker and switch
摘要
申请公布号	US1743597(A)	申请公布日期	1930.01.14
申请号	US19280254592	申请日期	1928.02.15
申请人	CASE JR CHARLES C	发明人	JR. CHARLES C. CASE,
分类号	H01H13/14	主分类号	H01H13/14
代理机构		代理人
主权项
地址

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