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公开(公告)号：US2924874A
公开(公告)日：1960-02-16
申请号：US51552755
申请日：1955-06-14
Applicant: CSF
Inventor： HARRY HUBER , GUYEN THIEN-CHI N
IPC: H01J1/26
CPC classification number: H01J1/26 , Y10T428/12146 , Y10T428/12729 , Y10T428/12944
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