Vibration-transmission system,申请号US19270200473-传众专利搜索

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发明名称	Vibration-transmission system
摘要
申请公布号	US1792637(A)	申请公布日期	1931.02.17
申请号	US19270200473	申请日期	1927.06.21
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	HARRISON HENRY C.
分类号	G11B3/18	主分类号	G11B3/18
代理机构		代理人
主权项
地址

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