METHOD AND APPARATUS FOR PYRO-RECORDING,申请号CAD307948-传众专利搜索

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发明名称	METHOD AND APPARATUS FOR PYRO-RECORDING
摘要
申请公布号	CA307948(A)	申请公布日期	1931.01.20
申请号	CAD307948	申请日期
申请人	THE RADIO CORPORATION OF AMERICA	发明人	RICHARD HOWLAND RANGER
分类号		主分类号
代理机构		代理人
主权项
地址

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