BE426216A - - Google Patents
Info
- Publication number
- BE426216A BE426216A BE426216DA BE426216A BE 426216 A BE426216 A BE 426216A BE 426216D A BE426216D A BE 426216DA BE 426216 A BE426216 A BE 426216A
- 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 |
|---|---|---|---|
| DEN40353D DE730148C (de) | 1937-02-09 | 1937-02-09 | Ionenrelaisroehre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE426216A true BE426216A (ja�@�@) | 1938-03-31 |
Family
ID=25759287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE426216D BE426216A (ja�@�@) | 1937-02-09 | 1938-02-05 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2220089A (ja�@�@) |
| BE (1) | BE426216A (ja�@�@) |
| CH (1) | CH202955A (ja�@�@) |
| DE (1) | DE730148C (ja�@�@) |
| FR (1) | FR833343A (ja�@�@) |
| GB (1) | GB500459A (ja�@�@) |
| NL (1) | NL51718C (ja�@�@) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2975319A (en) * | 1951-03-06 | 1961-03-14 | Tesla Np | Tacttron |
-
1937
- 1937-02-09 DE DEN40353D patent/DE730148C/de not_active Expired
-
1938
- 1938-02-04 US US188765A patent/US2220089A/en not_active Expired - Lifetime
- 1938-02-05 GB GB3712/38A patent/GB500459A/en not_active Expired
- 1938-02-05 BE BE426216D patent/BE426216A/xx unknown
- 1938-02-07 FR FR833343D patent/FR833343A/fr not_active Expired
- 1938-02-07 CH CH202955D patent/CH202955A/de unknown
- 1938-02-07 NL NL86324A patent/NL51718C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2220089A (en) | 1940-11-05 |
| NL51718C (ja�@�@) | 1941-12-15 |
| GB500459A (en) | 1939-02-09 |
| CH202955A (de) | 1939-02-15 |
| FR833343A (fr) | 1938-10-19 |
| DE730148C (de) | 1943-01-07 |