Patent US2939085A successfully refreshed from Google Patents.
US2939085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing color signal waves
Assignee: Ohmega Laboratories
•
Filing: 1956-02-09
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Granted: 1960-05-31
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Expires: 1976-02-09
Abstract
No abstract record available.
Inventors
- 👤 Harry R Foster
- 👤 Elmo E Crump
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:15
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2435195A
Cited
US2403561A
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US2414265A
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US2465355A
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FR950152A
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US2577141A
Cited
US2570716A
Cited
US2719187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |