US3374389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sole electrode of the crossed-field type of electron discharge device having a coating of refractory material thereon
Assignee: Thales SA
•
Filing: 1964-07-20
•
Granted: 1968-03-19
•
Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Cahour Pierre
- 👤 Sobotka Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:36
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J23/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2652513A
Cited
US2942140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |