Patent US2568448A successfully refreshed from Google Patents.
US2568448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parallax correction in color television
Assignee: General Electric Co
•
Filing: 1947-09-23
•
Granted: 1951-09-18
•
Expires: 1967-09-23
Abstract
No abstract record available.
Inventors
- 👤 Hansen Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:16
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/30; H01J29/32; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB443896A
Cited
US2307188A
Cited
US2296908A
Cited
US2310863A
Cited
US2389979A
Cited
US2416056A
Cited
US2461515A
Cited
US2446249A
Cited
US2446791A
Cited
US2446440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |