Sound tape operated switching mechanism,申请号US19550503582-传众专利搜索

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发明名称	Sound tape operated switching mechanism
摘要
申请公布号	US2820863(A)	申请公布日期	1958.01.21
申请号	US19550503582	申请日期	1955.04.25
申请人	NORMAN SWANSON	发明人	SWANSON NORMAN
分类号	G03B31/06;G11B15/06;G11B27/24	主分类号	G03B31/06
代理机构		代理人
主权项
地址

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