Tuning dial for radios,申请号US19310530827-传众专利搜索

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发明名称	Tuning dial for radios
摘要
申请公布号	US1864875(A)	申请公布日期	1932.06.28
申请号	US19310530827	申请日期	1931.04.17
申请人	WARREN JOSEPH J	发明人	WARREN JOSEPH J.
分类号	H03J1/04	主分类号	H03J1/04
代理机构		代理人
主权项
地址

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