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发明名称
Duplicating machine and block-out means therefor
摘要
申请公布号
US2231291(A)
申请公布日期
1941.02.11
申请号
US19390293157
申请日期
1939.09.02
申请人
DITTO, INCORPORATED
发明人
MORRISON ROBERT F.
分类号
B41L11/00
主分类号
B41L11/00
代理机构
代理人
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地址
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