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发明名称
Photographic printing
摘要
申请公布号
US1875751(A)
申请公布日期
1932.09.06
申请号
US19290346647
申请日期
1929.03.13
申请人
MITCHELL CAMERA CORPORATION
发明人
MITCHELL GEORGE A.
分类号
G03B27/475
主分类号
G03B27/475
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代理人
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