NL24661C - - Google Patents
Info
- Publication number
- NL24661C NL24661C NL24661DA NL24661C NL 24661 C NL24661 C NL 24661C NL 24661D A NL24661D A NL 24661DA NL 24661 C NL24661 C NL 24661C
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US233537A US1945746A (en) | 1927-11-16 | 1927-11-16 | Electron discharge device with indirectly heated cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL24661C true NL24661C (en:Method) |
Family
ID=22877646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL24661D NL24661C (en:Method) | 1927-11-16 |
Country Status (3)
| Country | Link |
|---|---|
| US (2) | US1945746A (en:Method) |
| GB (1) | GB300613A (en:Method) |
| NL (1) | NL24661C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3191089A (en) * | 1965-06-22 | Thermionic valve cathode | ||
| NL68498C (en:Method) * | 1948-03-15 | |||
| US2909699A (en) * | 1957-12-05 | 1959-10-20 | Sylvania Electric Prod | Electron discharge device |
-
0
- NL NL24661D patent/NL24661C/xx active
- US US19870D patent/USRE19870E/en not_active Expired
-
1927
- 1927-11-16 US US233537A patent/US1945746A/en not_active Expired - Lifetime
-
1928
- 1928-11-14 GB GB33382/28A patent/GB300613A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| USRE19870E (en) | 1936-02-25 |
| GB300613A (en) | 1929-06-20 |
| US1945746A (en) | 1934-02-06 |