GB8927439D0 - Cathode and heater assembly for electron beam devices - Google Patents
Cathode and heater assembly for electron beam devicesInfo
- Publication number
- GB8927439D0 GB8927439D0 GB898927439A GB8927439A GB8927439D0 GB 8927439 D0 GB8927439 D0 GB 8927439D0 GB 898927439 A GB898927439 A GB 898927439A GB 8927439 A GB8927439 A GB 8927439A GB 8927439 D0 GB8927439 D0 GB 8927439D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- electron beam
- heater assembly
- beam devices
- devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/15—Cathodes heated directly by an electric current
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU4615925 | 1988-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8927439D0 true GB8927439D0 (en) | 1990-02-07 |
GB2227360A GB2227360A (en) | 1990-07-25 |
Family
ID=21413257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8927439A Withdrawn GB2227360A (en) | 1988-12-05 | 1989-12-05 | Cathode and heater assembly for electron beam devices |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPH02250251A (en) |
DE (1) | DE3940215A1 (en) |
FR (1) | FR2643505A1 (en) |
GB (1) | GB2227360A (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1491338A1 (en) * | 1965-01-08 | 1969-04-30 | Varian Associates | Electron beam system |
SU376825A1 (en) * | 1971-05-24 | 1973-04-05 | ALL-UNION PA'POTNO-THEYN | |
FR2188839A5 (en) * | 1972-06-08 | 1974-01-18 | Aquitaine Petrole | |
GB1549127A (en) * | 1977-05-11 | 1979-08-01 | Inst Elektroswarki Patona | Electron beam welding guns |
GB1548818A (en) * | 1977-05-11 | 1979-07-18 | Inst Elektroswarki Patona | Electron beam welding guns |
JPS545840A (en) * | 1977-06-13 | 1979-01-17 | Inst Elektroswarki Patona | Cathode assembly for electron beam welding gun |
JPS544840A (en) * | 1977-06-13 | 1979-01-13 | Inst Elektroswarki Patona | Cathode assembly for electron beam welding gun |
-
1989
- 1989-12-05 FR FR8916036A patent/FR2643505A1/en not_active Withdrawn
- 1989-12-05 JP JP1316339A patent/JPH02250251A/en active Pending
- 1989-12-05 GB GB8927439A patent/GB2227360A/en not_active Withdrawn
- 1989-12-05 DE DE19893940215 patent/DE3940215A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB2227360A (en) | 1990-07-25 |
JPH02250251A (en) | 1990-10-08 |
DE3940215A1 (en) | 1990-06-13 |
FR2643505A1 (en) | 1990-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |