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发明名称
Manufacture of gaseous conduction devices
摘要
申请公布号
US1922245(A)
申请公布日期
1933.08.15
申请号
US19300498597
申请日期
1930.11.28
申请人
FANSTEEL PRODUCTS COMPANY, INC.
发明人
JR. FREDERICK L. HUNTER,
分类号
H01J9/385
主分类号
H01J9/385
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