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公开(公告)号:US2854362A
公开(公告)日:1958-09-30
申请号:US39608753
申请日:1953-12-03
Applicant: BRAND FRANK A , RAMSA ALEXANDER P
Inventor: BRAND FRANK A , RAMSA ALEXANDER P
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公开(公告)号:US2948954A
公开(公告)日:1960-08-16
申请号:US57039656
申请日:1956-03-08
Applicant: RAMSA ALEXANDER P
Inventor: RAMSA ALEXANDER P
CPC classification number: H01J23/26 , H01J19/00 , H01J2893/0025 , Y10T29/49117 , Y10T29/49996
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公开(公告)号:US2803569A
公开(公告)日:1957-08-20
申请号:US39608853
申请日:1953-12-03
Applicant: HAROLD JACOBS , LEIBOWITZ JACK R , RAMSA ALEXANDER P
Inventor: HAROLD JACOBS , LEIBOWITZ JACK R , RAMSA ALEXANDER P
IPC: H01L21/225 , H01L21/263
CPC classification number: H01L21/2633 , H01L21/2252 , Y10S438/914
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