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发明名称
Improvements in or relating to crystal contact devices
摘要
申请公布号
GB661969(A)
申请公布日期
1951.11.28
申请号
GB19490003746
申请日期
1949.02.10
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;EMRYS GWYNNE JAMES;AUBREY OSCAR EDGAR LINDELL
发明人
分类号
H01P1/00;H03D9/02
主分类号
H01P1/00
代理机构
代理人
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