Light transmission mechanism,申请号US19500183984-传众专利搜索

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发明名称	Light transmission mechanism
摘要
申请公布号	US2617892(A)	申请公布日期	1952.11.11
申请号	US19500183984	申请日期	1950.09.09
申请人	DE VRY CORPORATION	发明人	POWERS JOHN S.;LOTZ WALTER A.
分类号	G11B7/00	主分类号	G11B7/00
代理机构		代理人
主权项
地址

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