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公开(公告)号：US2816239A
公开(公告)日：1957-12-10
申请号：US46394454
申请日：1954-10-22
Applicant: JAMES KNIGHTS COMPANY
Inventor： BERGE ROBERT E
IPC: H03H3/04
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2.发明授权
公开(公告)号：US2877338A
公开(公告)日：1959-03-10
申请号：US46408854
申请日：1954-10-22
Applicant: JAMES KNIGHTS COMPANY
Inventor： BERGE ROBERT E
IPC: H03H3/04
CPC classification number: H03H3/04 , Y10T29/49004
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公开(公告)号：US2795905A
公开(公告)日：1957-06-18
申请号：US52495255
申请日：1955-07-28
Applicant: JAMES KNIGHTS COMPANY
Inventor： BERGE ROBERT E
IPC: H01J5/24
CPC classification number: H01J5/24 , H01J2893/0039 , Y10S53/03
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