BE403213A - - Google Patents
Info
- Publication number
- BE403213A BE403213A BE403213DA BE403213A BE 403213 A BE403213 A BE 403213A BE 403213D A BE403213D A BE 403213DA BE 403213 A BE403213 A BE 403213A
- 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 |
|---|---|---|---|
| US669503A US1989461A (en) | 1933-05-05 | 1933-05-05 | Ionic amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE403213A true BE403213A (en) | 1934-06-30 |
Family
ID=24686566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE403213D BE403213A (en) | 1933-05-05 | 1934-05-17 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1989461A (en) |
| BE (1) | BE403213A (en) |
| FR (1) | FR789133A (en) |
| GB (1) | GB438961A (en) |
| NL (1) | NL39614C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2620460A (en) * | 1941-04-10 | 1952-12-02 | Gen Motors Corp | Gas tube |
| US2495908A (en) * | 1948-07-16 | 1950-01-31 | Sylvania Electric Prod | Thermionic discharge device |
-
1933
- 1933-05-05 US US669503A patent/US1989461A/en not_active Expired - Lifetime
-
1934
- 1934-05-04 GB GB13545/34A patent/GB438961A/en not_active Expired
- 1934-05-05 NL NL69354A patent/NL39614C/xx active
- 1934-05-17 BE BE403213D patent/BE403213A/xx unknown
- 1934-05-22 FR FR789133D patent/FR789133A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB438961A (en) | 1935-11-27 |
| NL39614C (en) | 1936-12-15 |
| FR789133A (en) | 1935-10-23 |
| US1989461A (en) | 1935-01-29 |