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发明名称
Method of making spark gaps
摘要
申请公布号
US2491631(A)
申请公布日期
1949.12.20
申请号
US19450582136
申请日期
1945.03.10
申请人
P. R. MALLORY & CO., INC.
发明人
WALL ALEXANDER C.;OLES HERBERT E.
分类号
H01T21/00
主分类号
H01T21/00
代理机构
代理人
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