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1.
公开(公告)号:US3227906A
公开(公告)日:1966-01-04
申请号:US19189462
申请日:1962-05-02
Applicant: EITEL MCCULLOUGH INC
Inventor: KUEHNE GERHARD B
IPC: H01J3/02
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公开(公告)号:US3176179A
公开(公告)日:1965-03-30
申请号:US18219662
申请日:1962-03-26
Applicant: EITEL MCCULLOUGH INC
Inventor: KUEHNE GERHARD B , LEVIN MARTIN E
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