FR1017164A - Cathodes for thermionic tubes - Google Patents
Cathodes for thermionic tubesInfo
- Publication number
- FR1017164A FR1017164A FR1017164DA FR1017164A FR 1017164 A FR1017164 A FR 1017164A FR 1017164D A FR1017164D A FR 1017164DA FR 1017164 A FR1017164 A FR 1017164A
- Authority
- FR
- France
- Prior art keywords
- cathodes
- thermionic tubes
- thermionic
- tubes
- 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.)
- 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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/16—Cathodes heated directly by an electric current characterised by the shape
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1217749A GB666175A (en) | 1949-05-06 | 1949-05-06 | Improvements in or relating to directly heated cathodes for thermionic valves |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1017164A true FR1017164A (en) | 1952-12-03 |
Family
ID=9999753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1017164D Expired FR1017164A (en) | 1949-05-06 | 1950-05-06 | Cathodes for thermionic tubes |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR1017164A (en) |
GB (1) | GB666175A (en) |
NL (1) | NL76656C (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1490577A (en) * | 1966-05-18 | 1967-08-04 | Thomson Houston Comp Francaise | Cage-Shaped Direct Heating Cathode Improvements |
-
0
- NL NL76656D patent/NL76656C/xx active
-
1949
- 1949-05-06 GB GB1217749A patent/GB666175A/en not_active Expired
-
1950
- 1950-05-06 FR FR1017164D patent/FR1017164A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL76656C (en) | |
GB666175A (en) | 1952-02-06 |
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