BE357454A - - Google Patents
Info
- Publication number
- BE357454A BE357454A BE357454DA BE357454A BE 357454 A BE357454 A BE 357454A BE 357454D A BE357454D A BE 357454DA BE 357454 A BE357454 A BE 357454A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB169828A GB312100A (en) | 1928-01-18 | 1928-01-18 | Improvements in and relating to vacuum devices such as electric incandescent lamps, electron discharge tubes and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE357454A true BE357454A (mo) |
Family
ID=9726464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE357454D BE357454A (mo) | 1928-01-18 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE357454A (mo) |
| DE (1) | DE558947C (mo) |
| FR (1) | FR667535A (mo) |
| GB (1) | GB312100A (mo) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3092755A (en) * | 1958-04-11 | 1963-06-04 | David M Goodman | High power vacuum tubes |
-
0
- BE BE357454D patent/BE357454A/xx unknown
-
1928
- 1928-01-18 GB GB169828A patent/GB312100A/en not_active Expired
-
1929
- 1929-01-17 FR FR667535D patent/FR667535A/fr not_active Expired
- 1929-01-19 DE DEA56510D patent/DE558947C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE558947C (de) | 1932-09-14 |
| GB312100A (en) | 1929-05-21 |
| FR667535A (fr) | 1929-10-17 |