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经营范围
发明名称
Electric discharge tube
摘要
申请公布号
US2433813(A)
申请公布日期
1947.12.30
申请号
US19450612217
申请日期
1945.08.23
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
HILLIARD ROBERT C.
分类号
H01J17/38
主分类号
H01J17/38
代理机构
代理人
主权项
地址
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