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发明名称
Slide projector
摘要
申请公布号
US2949814(A)
申请公布日期
1960.08.23
申请号
US19570640710
申请日期
1957.02.18
申请人
BAUSCH & LOMB OPTICAL COMPANY
发明人
BOUGHTON OLIN W.;JR. CHARLES J. DE GRAVE,;MAIER KENNETH D.
分类号
G03B23/04
主分类号
G03B23/04
代理机构
代理人
主权项
地址
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