US3056853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrixing apparatus for color-television signals
Assignee: Hazeltine Research Inc
•
Filing: 1954-11-08
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Granted: 1962-10-02
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Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Walter C Espenlaub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:05
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/67
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732425A
Cited
FR1084376A
Cited
US2745900A
Cited
US2868872A
Cited
US2877347A
Cited
US2830112A
Cited
US2779818A
Cited
US2974289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |