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经营范围
发明名称
Improvements in or relating to thermionic valve circuit arrangements
摘要
申请公布号
GB470025(A)
申请公布日期
1937.08.09
申请号
GB19360003928
申请日期
1936.02.08
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;GEORGE MAURICE WRIGHT
发明人
分类号
H03B9/01
主分类号
H03B9/01
代理机构
代理人
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