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公开(公告)号：US3170494A
公开(公告)日：1965-02-23
申请号：US12115761
申请日：1961-06-30
Applicant: KAHLE ENGINEERING COMPANY
Inventor： LINDSAY JAMES B
IPC: H01J19/00
CPC classification number: H01J19/00 , H01J2893/0026
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公开(公告)号：US2778386A
公开(公告)日：1957-01-22
申请号：US31729552
申请日：1952-10-28
Applicant: KAHLE ENGINEERING COMPANY
Inventor： LINDSAY JAMES B
CPC classification number: B21F3/04 , H01J19/00 , H01J2893/0025
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