NL28915C - - Google Patents
Info
- Publication number
- NL28915C NL28915C NL28915DA NL28915C NL 28915 C NL28915 C NL 28915C NL 28915D A NL28915D A NL 28915DA NL 28915 C NL28915 C NL 28915C
- 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
- H01J17/52—Thermionic-cathode tubes with one cathode and one anode
- H01J17/54—Thermionic-cathode tubes with one cathode and one anode having one or more control electrodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US268975A US1880092A (en) | 1928-04-10 | 1928-04-10 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28915C true NL28915C (xx) |
Family
ID=23025319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28915D NL28915C (xx) | 1928-04-10 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1880092A (xx) |
| FR (1) | FR672920A (xx) |
| GB (2) | GB309442A (xx) |
| NL (1) | NL28915C (xx) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2504713A (en) * | 1942-09-24 | 1950-04-18 | Gen Electric | Light sensitive electric discharge device and control circuits therefor |
| US2717962A (en) * | 1944-03-31 | 1955-09-13 | Louis F Wouters | Electric discharge devices |
| US2445462A (en) * | 1944-04-26 | 1948-07-20 | Westinghouse Electric Corp | Electrical discharge device and base |
| US2579884A (en) * | 1947-12-11 | 1951-12-25 | Comb Control Corp | Flame failure safeguard |
| US2872611A (en) * | 1953-11-16 | 1959-02-03 | Sylvania Electric Prod | Cathode |
-
0
- NL NL28915D patent/NL28915C/xx active
-
1928
- 1928-04-10 US US268975A patent/US1880092A/en not_active Expired - Lifetime
-
1929
- 1929-02-25 GB GB6159/29A patent/GB309442A/en not_active Expired
- 1929-04-09 GB GB10952/29A patent/GB309447A/en not_active Expired
- 1929-04-10 FR FR672920D patent/FR672920A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB309442A (en) | 1930-08-25 |
| US1880092A (en) | 1932-09-27 |
| FR672920A (fr) | 1930-01-08 |
| GB309447A (en) | 1930-07-09 |