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发明名称
Improvements in or relating to electrical apparatus for the production of engraved printing surfaces
摘要
申请公布号
GB691295(A)
申请公布日期
1953.05.13
申请号
GB19480031814
申请日期
1949.07.12
申请人
CHARLES WILLIAM SWIFT;EDMUND ARTHUR PHILLIPS
发明人
分类号
B41C1/04
主分类号
B41C1/04
代理机构
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