Variable light-modifying device for phase contrast,申请号US19490107527-传众专利搜索

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发明名称	Variable light-modifying device for phase contrast
摘要
申请公布号	US2666362(A)	申请公布日期	1954.01.19
申请号	US19490107527	申请日期	1949.07.29
申请人	AMERICAN OPTICAL COMPANY	发明人	TILLYER EDGAR D.
分类号	G02B21/14	主分类号	G02B21/14
代理机构		代理人
主权项
地址

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