Detachable auxiliary lens shield,申请号US19460655090-传众专利搜索

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发明名称	Detachable auxiliary lens shield
摘要
申请公布号	US2516764(A)	申请公布日期	1950.07.25
申请号	US19460655090	申请日期	1946.03.18
申请人	DOMAR PRODUCTS INC.	发明人	EHLERT WILLIAM C.;JR. FRANK J. SCHNEIDER,
分类号	G02C9/04	主分类号	G02C9/04
代理机构		代理人
主权项
地址

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