Silicon-germanium objective lens,申请号US19500145827-传众专利搜索

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发明名称	Silicon-germanium objective lens
摘要
申请公布号	US2659271(A)	申请公布日期	1953.11.17
申请号	US19500145827	申请日期	1950.02.23
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	TREUTING ROBERT G.
分类号	G02B13/14	主分类号	G02B13/14
代理机构		代理人
主权项
地址

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