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公开(公告)号：US3121281A
公开(公告)日：1964-02-18
申请号：US9116061
申请日：1961-02-23
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： JAMES PETRO
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , Y10T29/5127 , Y10T29/5128 , Y10T29/53387
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公开(公告)号：US2843271A
公开(公告)日：1958-07-15
申请号：US47733254
申请日：1954-12-23
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： JAMES PETRO
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , H01J2893/0097
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公开(公告)号：US2946697A
公开(公告)日：1960-07-26
申请号：US70643657
申请日：1957-12-31
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： JAMES PETRO
IPC: H01K3/00
CPC classification number: H01K3/005
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公开(公告)号：US2963199A
公开(公告)日：1960-12-06
申请号：US47732954
申请日：1954-12-23
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： JAMES PETRO
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , H01J2893/0097
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