FR719108A - Perfectionnements aux cathodes incandescentes - Google Patents
Perfectionnements aux cathodes incandescentesInfo
- Publication number
- FR719108A FR719108A FR719108DA FR719108A FR 719108 A FR719108 A FR 719108A FR 719108D A FR719108D A FR 719108DA FR 719108 A FR719108 A FR 719108A
- Authority
- FR
- France
- Prior art keywords
- incandescent cathode
- incandescent
- cathode
- cathode improvements
- 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 |
---|---|---|---|
DE1930A0097530 DE618984C (de) | 1930-08-26 | 1930-08-26 | Gluehkathode |
Publications (1)
Publication Number | Publication Date |
---|---|
FR719108A true FR719108A (fr) | 1932-02-02 |
Family
ID=34812899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR719108D Expired FR719108A (fr) | 1930-08-26 | 1931-06-25 | Perfectionnements aux cathodes incandescentes |
Country Status (6)
Country | Link |
---|---|
US (1) | US1951216A (fr) |
BE (1) | BE382201A (fr) |
DE (1) | DE618984C (fr) |
FR (1) | FR719108A (fr) |
GB (1) | GB374699A (fr) |
NL (1) | NL31822C (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR830663A (fr) * | 1936-12-31 | 1938-08-05 | Rca Corp | Perfectionnements aux systèmes d'électrodes pour dispositifs à décharge électronique |
DE744452C (de) * | 1940-03-29 | 1944-01-19 | Aeg | Unmittelbar geheizte Kathode, insbesondere fuer Hochleistungsroehren |
DE10020266A1 (de) * | 2000-04-25 | 2001-11-08 | Siemens Ag | Thermionischer Flachemitter |
-
1930
- 1930-08-26 DE DE1930A0097530 patent/DE618984C/de not_active Expired
-
1931
- 1931-06-25 FR FR719108D patent/FR719108A/fr not_active Expired
- 1931-08-12 US US556709A patent/US1951216A/en not_active Expired - Lifetime
- 1931-08-24 BE BE382201D patent/BE382201A/xx unknown
- 1931-08-24 GB GB23790/31A patent/GB374699A/en not_active Expired
- 1931-08-24 NL NL58211A patent/NL31822C/xx active
Also Published As
Publication number | Publication date |
---|---|
DE618984C (de) | 1935-09-19 |
BE382201A (fr) | 1931-09-30 |
GB374699A (en) | 1932-06-16 |
US1951216A (en) | 1934-03-13 |
NL31822C (fr) | 1934-01-15 |
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