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经营范围
发明名称
Registering frame and negative carrier for enlarging
摘要
申请公布号
US2418226(A)
申请公布日期
1947.04.01
申请号
US19440545447
申请日期
1944.07.18
申请人
GENERAL ANILINE & FILM CORPORATION
发明人
HAFF RICHARD M.
分类号
G03B27/62
主分类号
G03B27/62
代理机构
代理人
主权项
地址
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