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发明名称
Improvements in and relating to the photomechanical production of intaglio formes
摘要
申请公布号
GB814165(A)
申请公布日期
1959.05.27
申请号
GB19570035827
申请日期
1957.11.18
申请人
DR. BEKK & KAULEN CHEMISCHE FABRIK G.M.B.H.
发明人
KAULEN ROBERT
分类号
G03F5/20
主分类号
G03F5/20
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代理人
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