Patent US3515803A successfully refreshed from Google Patents.
US3515803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contrast range control
Assignee: Magnavox Electronic Systems Co
•
Filing: 1967-06-28
•
Granted: 1970-06-02
•
Expires: 1987-06-28
Abstract
No abstract record available.
Inventors
- 👤 Malcolm M Lorang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; H04N1/4072
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2509987A
Cited
US2877297A
Cited
US2911464A
Cited
US3153726A
Cited
US3271513A
Cited
US3274335A
Cited
US3322893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |