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发明名称
Intaglio printing method
摘要
申请公布号
US1817435(A)
申请公布日期
1931.08.04
申请号
US19250034539
申请日期
1925.06.03
申请人
HYDROGRAPHIC PRODUCTS COMPANY, INC.
发明人
FREUDER LEO
分类号
B41N3/00
主分类号
B41N3/00
代理机构
代理人
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地址
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