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经营范围
发明名称
High vacuum getter
摘要
申请公布号
US2469626(A)
申请公布日期
1949.05.10
申请号
US19460678120
申请日期
1946.06.20
申请人
PHILIPS LABORATORIES, INC.
发明人
BEERS JOHN R.
分类号
H01J7/18;H01J29/94
主分类号
H01J7/18
代理机构
代理人
主权项
地址
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