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公开(公告)号:US2725901A
公开(公告)日:1955-12-06
申请号:US14153150
申请日:1950-01-31
Applicant: RCA CORP
Inventor: ENGEL WILLIAM T
IPC: B21F27/12
CPC classification number: B21F27/12
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公开(公告)号:US2609912A
公开(公告)日:1952-09-09
申请号:US4951448
申请日:1948-09-16
Applicant: RCA CORP
Inventor: ENGEL WILLIAM T
IPC: B65G47/14
CPC classification number: B65G47/1471
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公开(公告)号:US2609858A
公开(公告)日:1952-09-09
申请号:US6833748
申请日:1948-12-30
Applicant: RCA CORP
Inventor: ENGEL WILLIAM T
CPC classification number: H01J9/28
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公开(公告)号:US2595063A
公开(公告)日:1952-04-29
申请号:US12207549
申请日:1949-10-18
Applicant: RCA CORP
Inventor: ENGEL WILLIAM T
CPC classification number: G01L1/042 , G01N3/14 , G01N2203/0035
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公开(公告)号:US2252561A
公开(公告)日:1941-08-12
申请号:US35735340
申请日:1940-09-19
Applicant: RCA CORP
Inventor: ENGEL WILLIAM T
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , H01J2893/0097
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