Adjustment of vibration frequency of piezoelectric crystals,申请号GB19470015004-传众专利搜索

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发明名称	Adjustment of vibration frequency of piezoelectric crystals
摘要
申请公布号	GB638304(A)	申请公布日期	1950.06.07
申请号	GB19470015004	申请日期	1947.06.06
申请人	STANDARD TELEPHONES AND CABLES LIMITED;EDWARD STAINSBY WRIGHT	发明人
分类号	H03H3/04	主分类号	H03H3/04
代理机构		代理人
主权项
地址

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