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经营范围
发明名称
Photogravure
摘要
申请公布号
US2482638(A)
申请公布日期
1949.09.20
申请号
US19430482712
申请日期
1943.04.12
申请人
TRIANGLE PUBLICATIONS, INC.
发明人
SCHULTZ OSWALD R.;NESTLE ROBERT F.;ROMANO MATTHEW J.
分类号
G03F5/20
主分类号
G03F5/20
代理机构
代理人
主权项
地址
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