US2533381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrooptical dark trace picture tube
Assignee: National Union Radio Corp
•
Filing: 1948-10-23
•
Granted: 1950-12-12
•
Expires: 1968-10-23
Abstract
No abstract record available.
Inventors
- 👤 Levy Gustave
- 👤 Simbrat Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14; Y; Y10; Y10S; Y10S348/00; Y10S348/902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE22734E
Cited
US2403227A
Cited
US2402758A
Cited
US2402761A
Cited
US2438668A
Cited
US2460093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |