NL32239C - - Google Patents
Info
- Publication number
- NL32239C NL32239C NL32239DA NL32239C NL 32239 C NL32239 C NL 32239C NL 32239D A NL32239D A NL 32239DA NL 32239 C NL32239 C NL 32239C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/50—Thermionic-cathode tubes
- H01J17/58—Thermionic-cathode tubes with more than one cathode or anode
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US482425A US1913427A (en) | 1930-09-17 | 1930-09-17 | Electric discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL32239C true NL32239C (en:Method) |
Family
ID=23916019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL32239D NL32239C (en:Method) | 1930-09-17 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1913427A (en:Method) |
| DE (1) | DE675603C (en:Method) |
| GB (1) | GB379736A (en:Method) |
| NL (1) | NL32239C (en:Method) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2432608A (en) * | 1941-03-28 | 1947-12-16 | Ncr Co | Multianode, gas-filled discharge device |
| US2601528A (en) * | 1946-07-13 | 1952-06-24 | Sylvania Electric Prod | Structure and internal shielding of electron tubes |
| US2476940A (en) * | 1947-05-22 | 1949-07-19 | Raytheon Mfg Co | Subminiature type vacuum tube structure |
| US4230968A (en) * | 1976-05-26 | 1980-10-28 | Hitachi, Ltd. | Cathode structure for magnetrons |
-
0
- NL NL32239D patent/NL32239C/xx active
-
1930
- 1930-09-17 US US482425A patent/US1913427A/en not_active Expired - Lifetime
-
1931
- 1931-06-04 GB GB16230/31A patent/GB379736A/en not_active Expired
- 1931-07-09 DE DEI42021D patent/DE675603C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1913427A (en) | 1933-06-13 |
| DE675603C (de) | 1939-05-15 |
| GB379736A (en) | 1932-09-05 |