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经营范围
发明名称
Vacuumtight seal for electrical apparatus and method of forming such seals
摘要
申请公布号
US2561520(A)
申请公布日期
1951.07.24
申请号
US19470758946
申请日期
1947.07.03
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
LEMMENS HENDRICUS JOHANNES;DORGELO EDUARD GERARDUS
分类号
C03C27/02
主分类号
C03C27/02
代理机构
代理人
主权项
地址
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