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发明名称
Process and apparatus for drawing electrical pictures
摘要
申请公布号
US1818760(A)
申请公布日期
1931.08.11
申请号
US19290333462
申请日期
1929.01.18
申请人
EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG
发明人
SELENYI PAUL
分类号
H01J29/00
主分类号
H01J29/00
代理机构
代理人
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地址
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