Variable area transducers,申请号US19560594645-传众专利搜索

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发明名称	Variable area transducers
摘要
申请公布号	US2995632(A)	申请公布日期	1961.08.08
申请号	US19560594645	申请日期	1956.06.28
申请人	SPERRY RAND CORPORATION	发明人	DANIELS HOWARD L.
分类号	G11B5/147;G11B5/49	主分类号	G11B5/147
代理机构		代理人
主权项
地址

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