NL17244C - - Google Patents
Info
- Publication number
- NL17244C NL17244C NL17244DA NL17244C NL 17244 C NL17244 C NL 17244C NL 17244D A NL17244D A NL 17244DA NL 17244 C NL17244 C NL 17244C
- 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 |
|---|---|---|---|
| NL213605X | 1923-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL17244C true NL17244C (fr) |
Family
ID=19778953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL17244D NL17244C (fr) | 1923-03-29 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1875002A (fr) |
| DE (1) | DE478441C (fr) |
| FR (1) | FR579100A (fr) |
| GB (1) | GB213605A (fr) |
| NL (1) | NL17244C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2594897A (en) * | 1945-09-19 | 1952-04-29 | Bell Telephone Labor Inc | Cathode structure for electron discharge tubes |
-
0
- NL NL17244D patent/NL17244C/xx active
-
1924
- 1924-03-17 US US699906A patent/US1875002A/en not_active Expired - Lifetime
- 1924-03-21 FR FR579100D patent/FR579100A/fr not_active Expired
- 1924-03-21 DE DEN22995D patent/DE478441C/de not_active Expired
- 1924-03-28 GB GB7990/24A patent/GB213605A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1875002A (en) | 1932-08-30 |
| FR579100A (fr) | 1924-10-09 |
| DE478441C (de) | 1929-07-04 |
| GB213605A (en) | 1924-06-05 |