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发明名称
Article comprised of a metallic part and a ceramic body
摘要
申请公布号
US2728425(A)
申请公布日期
1955.12.27
申请号
US19530345331
申请日期
1953.03.30
申请人
INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
发明人
DAY CYRIL L.
分类号
H01J19/42
主分类号
H01J19/42
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