-
1.Method of and means for removing gaseous impurities from electric discharge tubes 失效
Title translation: 从放电管中除去气态杂质的方法和装置公开(公告)号:US1962138A
公开(公告)日:1934-06-12
申请号:US56334631
申请日:1931-09-17
Applicant: DAWSON LEO H
Inventor: DAWSON LEO H
IPC: H01J9/385
CPC classification number: H01J9/385
-
公开(公告)号:US1922281A
公开(公告)日:1933-08-15
申请号:US56580731
申请日:1931-09-29
Applicant: DAWSON LEO H
Inventor: DAWSON LEO H
IPC: H01J17/00
CPC classification number: H01J17/00 , H01J2893/0064
-
公开(公告)号:US1825781A
公开(公告)日:1931-10-06
申请号:US38216229
申请日:1929-07-30
Applicant: DAWSON LEO H
Inventor: DAWSON LEO H
IPC: H04N3/04
CPC classification number: H04N3/04
-
公开(公告)号:US2372661A
公开(公告)日:1945-04-03
申请号:US43797342
申请日:1942-04-07
Applicant: DAWSON LEO H
Inventor: DAWSON LEO H
IPC: G01J1/42
CPC classification number: G01J1/42
-
公开(公告)号:US2273838A
公开(公告)日:1942-02-24
申请号:US34917140
申请日:1940-08-01
Applicant: DAWSON LEO H
Inventor: DAWSON LEO H
IPC: G01J1/12
CPC classification number: G01J1/12
-
-
-
-