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发明名称
Basing of radio tubes and the like
摘要
申请公布号
US2470518(A)
申请公布日期
1949.05.17
申请号
US19460711106
申请日期
1946.11.20
申请人
SYLVANIA ELECTRIC PRODUCTS, INC.
发明人
ORR MARK J.
分类号
H01J9/30
主分类号
H01J9/30
代理机构
代理人
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地址
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