Variable density goggle,申请号US19420441644-传众专利搜索

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发明名称	Variable density goggle
摘要
申请公布号	US2422287(A)	申请公布日期	1947.06.17
申请号	US19420441644	申请日期	1942.05.04
申请人	AMERICAN OPTICAL COMPANY	发明人	BERNHEIM DANIEL P.;SPLAINE EDWARD M.
分类号	G02C7/12	主分类号	G02C7/12
代理机构		代理人
主权项
地址

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