Patent US2690518A successfully refreshed from Google Patents.
US2690518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color picture tube
Assignee: CBS Broadcasting Inc
•
Filing: 1953-06-01
•
Granted: 1954-09-28
•
Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 Norman F Fyler
- 👤 William E Rowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:21
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/20; H01J31/201; H01J31/203; H01J31/205; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J9/00; H01J9/24; H01J9/26; H01J9/263; H01J2229/00; H01J2229/07; H01J2229/0722
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |