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发明名称
Portfolio
摘要
申请公布号
US2103203(A)
申请公布日期
1937.12.21
申请号
US19360099460
申请日期
1936.09.04
申请人
SPRINGFIELD PHOTOMOUNT COMPANY
发明人
JOLLY OSCAR W.
分类号
B42D5/00;B42F7/00
主分类号
B42D5/00
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代理人
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