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发明名称
Photographic enlarger
摘要
申请公布号
US2415568(A)
申请公布日期
1947.02.11
申请号
US19450623292
申请日期
1945.10.19
申请人
SIMMON BROTHERS, INC.
发明人
SIMMON ALFRED;WEISGLASS LOUIS L.
分类号
G03B27/32
主分类号
G03B27/32
代理机构
代理人
主权项
地址
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