NL68498C - - Google Patents
Info
- Publication number
- NL68498C NL68498C NL68498DA NL68498C NL 68498 C NL68498 C NL 68498C NL 68498D A NL68498D A NL 68498DA NL 68498 C NL68498 C NL 68498C
- 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
- H01J1/22—Heaters
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL270976X | 1948-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL68498C true NL68498C (nl) |
Family
ID=19781927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL68498D NL68498C (nl) | 1948-03-15 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2593856A (nl) |
| BE (1) | BE487889A (nl) |
| CH (1) | CH270976A (nl) |
| DE (1) | DE809324C (nl) |
| FR (1) | FR983147A (nl) |
| GB (1) | GB676009A (nl) |
| NL (1) | NL68498C (nl) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869692A (en) * | 1973-05-07 | 1975-03-04 | Gte Sylvania Inc | Heater for vacuum tube cathode in which the wire of the heater legs has been etched to reduce its diameter |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US247097A (en) * | 1881-09-13 | Joseph v | ||
| USRE19870E (en) * | 1927-11-16 | 1936-02-25 | Electron discharge device with | |
| US2075876A (en) * | 1927-12-28 | 1937-04-06 | Electrons Inc | Cathode organization |
| US1914883A (en) * | 1929-10-22 | 1933-06-20 | Frederick G Cottrell | Method and apparatus for producing ions |
| US1968280A (en) * | 1933-05-01 | 1934-07-31 | Grigsby Grunow Co | Cathode structure |
| US2399402A (en) * | 1941-04-08 | 1946-04-30 | Bendix Aviat Corp | Electrical connecting and radioshielding means |
| US2403444A (en) * | 1941-05-31 | 1946-07-09 | Bell Telephone Labor Inc | Electron discharge device |
| US2403445A (en) * | 1941-05-31 | 1946-07-09 | Bell Telephone Labor Inc | Electron discharge device |
-
0
- NL NL68498D patent/NL68498C/xx active
- BE BE487889D patent/BE487889A/xx unknown
-
1949
- 1949-02-17 US US76884A patent/US2593856A/en not_active Expired - Lifetime
- 1949-03-06 DE DEP35878D patent/DE809324C/de not_active Expired
- 1949-03-11 GB GB6742/49A patent/GB676009A/en not_active Expired
- 1949-03-14 CH CH270976D patent/CH270976A/de unknown
- 1949-03-14 FR FR983147D patent/FR983147A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE809324C (de) | 1951-07-26 |
| CH270976A (de) | 1950-09-30 |
| BE487889A (nl) | |
| US2593856A (en) | 1952-04-22 |
| GB676009A (en) | 1952-07-23 |
| FR983147A (fr) | 1951-06-19 |