MEANS AND METHODS OF ALTERING THE FREQUENCY OF PIEZOELECTRIC CRYSTALS,申请号CAD489200-传众专利搜索

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发明名称	MEANS AND METHODS OF ALTERING THE FREQUENCY OF PIEZOELECTRIC CRYSTALS
摘要
申请公布号	CA489200(A)	申请公布日期	1952.12.30
申请号	CAD489200	申请日期
申请人	AMERICAN OPTICAL COMPANY	发明人	HAROLD R. MOULTON
分类号		主分类号
代理机构		代理人
主权项
地址

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