Holder for piezoelectric crystals,申请号US19310582689-传众专利搜索

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发明名称	Holder for piezoelectric crystals
摘要
申请公布号	US2047387(A)	申请公布日期	1936.07.14
申请号	US19310582689	申请日期	1931.12.23
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	SCOTT HERBERT J.
分类号	H03H9/09	主分类号	H03H9/09
代理机构		代理人
主权项
地址

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