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经营范围
发明名称
Demountable vacuumtight seal
摘要
申请公布号
US2627580(A)
申请公布日期
1953.02.03
申请号
US19480056176
申请日期
1948.10.23
申请人
RADIO CORPORATION OF AMERICA
发明人
PICARD ROBERT G.
分类号
H01J37/18
主分类号
H01J37/18
代理机构
代理人
主权项
地址
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