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公开(公告)号：US2317754A
公开(公告)日：1943-04-27
申请号：US40481141
申请日：1941-07-31
Applicant: PAUL GORLICH
Inventor： PAUL GORLICH
IPC: H01J9/12
CPC classification number: H01J9/125 , H01J2201/32
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公开(公告)号：US2297467A
公开(公告)日：1942-09-29
申请号：US33096440
申请日：1940-04-22
Applicant: PAUL GORLICH
Inventor： PAUL GORLICH
IPC: H01J1/34
CPC classification number: H01J1/34 , Y10T428/12493 , Y10T428/12632 , Y10T428/12681 , Y10T428/12896
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