Photographic slide viewer and projector,申请号US19470788472-传众专利搜索

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发明名称	Photographic slide viewer and projector
摘要
申请公布号	US2529052(A)	申请公布日期	1950.11.07
申请号	US19470788472	申请日期	1947.11.28
申请人	SHERWOOD PERLEY A	发明人	SHERWOOD PERLEY A.
分类号	G03B21/26	主分类号	G03B21/26
代理机构		代理人
主权项
地址

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