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Stencil sheets
摘要
申请公布号
US1878672(A)
申请公布日期
1932.09.20
申请号
US19290355983
申请日期
1929.04.17
申请人
DITTO, INCORPORATED
发明人
CARR KENNETH W.
分类号
B41N1/24
主分类号
B41N1/24
代理机构
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