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发明名称
Engraving facsimile system
摘要
申请公布号
US2489691(A)
申请公布日期
1949.11.29
申请号
US19470727407
申请日期
1947.02.08
申请人
WASHINGTON JR GEORGE
发明人
JR. GEORGE WASHINGTON,
分类号
B41C1/04
主分类号
B41C1/04
代理机构
代理人
主权项
地址
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