NL7572C - - Google Patents
Info
- Publication number
- NL7572C NL7572C NL7572DA NL7572C NL 7572 C NL7572 C NL 7572C NL 7572D A NL7572D A NL 7572DA NL 7572 C NL7572 C NL 7572C
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
- H01J1/13—Solid thermionic cathodes
- H01J1/135—Circuit arrangements therefor, e.g. for temperature control
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21594/19A GB154982A (en) | 1919-09-03 | 1919-09-03 | Improvement in valves used for wireless transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7572C true NL7572C (https=) |
Family
ID=10165535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7572D NL7572C (https=) | 1919-09-03 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1654513A (https=) |
| FR (1) | FR523613A (https=) |
| GB (1) | GB154982A (https=) |
| NL (1) | NL7572C (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2424526A (en) * | 1943-01-11 | 1947-07-22 | Gen Electric | Electric discharge device |
| NL67449C (https=) * | 1947-11-28 | 1900-01-01 |
-
0
- NL NL7572D patent/NL7572C/xx active
-
1919
- 1919-09-03 GB GB21594/19A patent/GB154982A/en not_active Expired
-
1920
- 1920-09-02 US US407664A patent/US1654513A/en not_active Expired - Lifetime
- 1920-09-03 FR FR523613A patent/FR523613A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB154982A (en) | 1920-12-03 |
| FR523613A (fr) | 1921-08-20 |
| US1654513A (en) | 1927-12-27 |