US2926286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold cathode display device
Assignee: Tung Sol Electric Inc
•
Filing: 1958-09-19
•
Granted: 1960-02-23
•
Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
- 👤 Albert M Skellett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:08
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/12; H01J31/123; H01J31/124; H01J29/00; H01J29/46; H01J29/467; H01J29/86; H01J29/861
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2313286A
Cited
US2670402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |