BE403775A - - Google Patents
Info
- Publication number
- BE403775A BE403775A BE403775DA BE403775A BE 403775 A BE403775 A BE 403775A BE 403775D A BE403775D A BE 403775DA BE 403775 A BE403775 A BE 403775A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
- H01J17/56—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes for preventing and then permitting ignition, but thereafter having no control
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US702667A US1989462A (en) | 1933-12-16 | 1933-12-16 | Ionic amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE403775A true BE403775A (en) | 1934-07-31 |
Family
ID=24822148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE403775D BE403775A (en) | 1933-12-16 | 1934-06-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1989462A (en) |
| BE (1) | BE403775A (en) |
| ES (1) | ES134642A1 (en) |
| FR (1) | FR774088A (en) |
| GB (1) | GB439879A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2495908A (en) * | 1948-07-16 | 1950-01-31 | Sylvania Electric Prod | Thermionic discharge device |
| CN102592946A (en) * | 2012-02-26 | 2012-07-18 | 烟台同辉照明科技有限公司 | Low-frequency and low-voltage electrodeless ultraviolet lamp |
-
1933
- 1933-12-16 US US702667A patent/US1989462A/en not_active Expired - Lifetime
-
1934
- 1934-05-11 GB GB14306/34A patent/GB439879A/en not_active Expired
- 1934-05-31 ES ES0134642A patent/ES134642A1/en not_active Expired
- 1934-06-02 FR FR774088D patent/FR774088A/en not_active Expired
- 1934-06-18 BE BE403775D patent/BE403775A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US1989462A (en) | 1935-01-29 |
| GB439879A (en) | 1935-12-11 |
| FR774088A (en) | 1934-11-30 |
| ES134642A1 (en) | 1934-08-16 |