FR2475796B1 - - Google Patents
Info
- Publication number
- FR2475796B1 FR2475796B1 FR8003050A FR8003050A FR2475796B1 FR 2475796 B1 FR2475796 B1 FR 2475796B1 FR 8003050 A FR8003050 A FR 8003050A FR 8003050 A FR8003050 A FR 8003050A FR 2475796 B1 FR2475796 B1 FR 2475796B1
- 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
- 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
- H01J1/14—Solid thermionic cathodes characterised by the material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8003050A FR2475796A1 (fr) | 1980-02-12 | 1980-02-12 | Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8003050A FR2475796A1 (fr) | 1980-02-12 | 1980-02-12 | Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2475796A1 FR2475796A1 (fr) | 1981-08-14 |
| FR2475796B1 true FR2475796B1 (US06373033-20020416-M00071.png) | 1982-09-03 |
Family
ID=9238489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8003050A Granted FR2475796A1 (fr) | 1980-02-12 | 1980-02-12 | Cathode a chauffage direct, son procede de fabrication, et tube electronique incorporant une telle cathode |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2475796A1 (US06373033-20020416-M00071.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3148441A1 (de) * | 1981-12-08 | 1983-07-21 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Verfahren zur herstellung einer thermionischen kathode |
-
1980
- 1980-02-12 FR FR8003050A patent/FR2475796A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2475796A1 (fr) | 1981-08-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CL | Concession to grant licenses | ||
| ST | Notification of lapse |