Piezoelectric crystal holder,申请号US19410385624-传众专利搜索

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发明名称	Piezoelectric crystal holder
摘要
申请公布号	US2259957(A)	申请公布日期	1941.10.21
申请号	US19410385624	申请日期	1941.03.28
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	KOERNER LAWRENCE F.
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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