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发明名称
Method of and apparatus for preparing facsimile master copies
摘要
申请公布号
US2260862(A)
申请公布日期
1941.10.28
申请号
US19390283954
申请日期
1939.07.12
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
O'BRIEN FREDERIC L.;ESTES PHILLIP H.
分类号
H04N1/032
主分类号
H04N1/032
代理机构
代理人
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地址
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