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发明名称
Art of sealing metal casings enclosing vibratile elements
摘要
申请公布号
US2444312(A)
申请公布日期
1948.06.29
申请号
US19450591300
申请日期
1945.05.01
申请人
RADIO CORPORATION
发明人
ROBERDS WESLEY M.;BEARD JOSEPH G.;BLANCHA FELIX C.
分类号
H01J5/28
主分类号
H01J5/28
代理机构
代理人
主权项
地址
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