Variable pitch drive screw and tuning system,申请号US19430512113-传众专利搜索

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发明名称	Variable pitch drive screw and tuning system
摘要
申请公布号	US2485464(A)	申请公布日期	1949.10.18
申请号	US19430512113	申请日期	1943.11.29
申请人	RADIO CORPORATION	发明人	SCOTT HAROLD B.
分类号	H03J1/06	主分类号	H03J1/06
代理机构		代理人
主权项
地址

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