BE427228A - - Google Patents
Info
- Publication number
- BE427228A BE427228A BE427228DA BE427228A BE 427228 A BE427228 A BE 427228A BE 427228D A BE427228D A BE 427228DA BE 427228 A BE427228 A BE 427228A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- 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
- H01J1/32—Secondary-electron-emitting electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
- Gas-Filled Discharge Tubes (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL207921X | 1937-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE427228A true BE427228A (en) |
Family
ID=19778652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE427228D BE427228A (en) | 1937-03-30 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2159774A (en) |
| BE (1) | BE427228A (en) |
| CH (1) | CH207921A (en) |
| DE (1) | DE747205C (en) |
| FR (1) | FR835838A (en) |
| GB (1) | GB498792A (en) |
| NL (1) | NL50262C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE477661A (en) * | 1939-02-03 | |||
| DE914418C (en) * | 1939-02-19 | 1954-07-01 | Fernseh Gmbh | Discharge tubes with a secondary emitting insulating surface |
| FR857575A (en) * | 1939-02-27 | 1940-09-19 | Materiel Telephonique | Electronic discharge devices and circuits using them |
| DE895629C (en) * | 1940-07-31 | 1953-11-05 | Zeiss Ikon Ag | Process for the manufacture of secondary emission cathodes |
| US2422088A (en) * | 1944-04-03 | 1947-06-10 | Rca Corp | Electronic discriminator |
| FR958107A (en) * | 1945-10-24 | 1950-03-03 | ||
| GB683061A (en) * | 1948-01-24 | 1952-11-19 | Emi Ltd | Improvements relating to thermionic valves utilising secondary electron emission amplification |
| US2792273A (en) * | 1954-01-14 | 1957-05-14 | Gen Electric | Oxide coated nickel cathode and method of activation |
| US2878093A (en) * | 1955-02-14 | 1959-03-17 | Univ Minnesota | Method of preparing emitter surfaces |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT101557B (en) * | 1923-04-11 | 1925-11-10 | Philips Nv | Discharge tube. |
| BE359997A (en) * | 1928-05-14 | |||
| GB443214A (en) * | 1934-08-20 | 1936-02-20 | Albert Karl Franz Patin | Improved method of applying coatings of alkali or alkaline earth metals |
-
0
- BE BE427228D patent/BE427228A/xx unknown
- NL NL50262D patent/NL50262C/xx active
-
1938
- 1938-03-15 US US195942A patent/US2159774A/en not_active Expired - Lifetime
- 1938-03-28 GB GB9451/38A patent/GB498792A/en not_active Expired
- 1938-03-28 CH CH207921D patent/CH207921A/en unknown
- 1938-03-28 FR FR835838D patent/FR835838A/en not_active Expired
- 1938-03-29 DE DEN41816D patent/DE747205C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE747205C (en) | 1944-09-15 |
| GB498792A (en) | 1939-01-13 |
| US2159774A (en) | 1939-05-23 |
| FR835838A (en) | 1939-01-04 |
| CH207921A (en) | 1939-12-15 |
| NL50262C (en) |