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发明名称
Electric discharge tube base
摘要
申请公布号
US2449374(A)
申请公布日期
1948.09.14
申请号
US19460684088
申请日期
1946.07.16
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
FENNEMA PIETER HARM;KRONOUER JOHAN GEORGE;PRAKKE FRITS
分类号
H01J5/54;H01J19/66
主分类号
H01J5/54
代理机构
代理人
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地址
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