US2774913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron discharge tube with crossed electric and magnetic fields
Assignee: Thales SA
•
Filing: 1952-05-28
•
Granted: 1956-12-18
•
Expires: 1972-05-28
Abstract
No abstract record available.
Inventors
- 👤 Charles Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/42; H01J25/44; C; C22; C22B; C22B1/00; C22B1/02; C22B1/14; H01J23/00; H01J23/02; H01J23/06; H01J23/075
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2414121A
Cited
US2413251A
Cited
US2566087A
Cited
US2654004A
Cited
US2607904A
Cited
US2680823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |