Method and apparatus for changing frequency for radiosignaling,申请号US19280246878-传众专利搜索

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发明名称	Method and apparatus for changing frequency for radiosignaling
摘要
申请公布号	US1863564(A)	申请公布日期	1932.06.21
申请号	US19280246878	申请日期	1928.01.14
申请人	LUCIEN CHRETIEN	发明人	CHRETIEN LUCIEN
分类号	H03D7/08	主分类号	H03D7/08
代理机构		代理人
主权项
地址

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