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发明名称
Photographic enlargement printing frame
摘要
申请公布号
US2432040(A)
申请公布日期
1947.12.02
申请号
US19450586334
申请日期
1945.04.03
申请人
ANDREW RAIFF;ROBBINS SYLVIA S;ROBBINS VICTOR G
发明人
RAIFF ANDREW;ROBBINS SYLVIA S.;ROBBINS VICTOR G.
分类号
G03B27/58
主分类号
G03B27/58
代理机构
代理人
主权项
地址
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