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发明名称
ELECTRON GUN WITH EXPANDED INSULATOR POSTS
摘要
申请公布号
US3484641(A)
申请公布日期
1969.12.16
申请号
USD3484641
申请日期
1967.01.30
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
JOSEPH M. DREES
分类号
H01J3/02;(IPC1-7):H01J1/88;H01J19/42
主分类号
H01J3/02
代理机构
代理人
主权项
地址
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