FR950881A - - Google Patents
Info
- Publication number
- FR950881A FR950881A FR950881DA FR950881A FR 950881 A FR950881 A FR 950881A FR 950881D A FR950881D A FR 950881DA FR 950881 A FR950881 A FR 950881A
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/484—Eliminating deleterious effects due to thermal effects, electrical or magnetic fields; Preventing unwanted emission
-
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/22—Heaters
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1703440A GB543920A (en) | 1940-11-29 | 1940-11-29 | Improvements in cathodes for cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR950881A true FR950881A (US06373033-20020416-M00071.png) | 1949-10-10 |
Family
ID=10088050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR950881D Expired FR950881A (US06373033-20020416-M00071.png) | 1940-11-29 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR950881A (US06373033-20020416-M00071.png) |
| GB (1) | GB543920A (US06373033-20020416-M00071.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0520445A1 (en) * | 1991-06-25 | 1992-12-30 | Nec Corporation | Heater coil for electron tube |
-
0
- FR FR950881D patent/FR950881A/fr not_active Expired
-
1940
- 1940-11-29 GB GB1703440A patent/GB543920A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0520445A1 (en) * | 1991-06-25 | 1992-12-30 | Nec Corporation | Heater coil for electron tube |
| US5426351A (en) * | 1991-06-25 | 1995-06-20 | Nec Corporation | Heater coil for electron tube |
Also Published As
| Publication number | Publication date |
|---|---|
| GB543920A (en) | 1942-03-19 |
