US2983859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
On-off control systems with fast time scale computer
Assignee: National Research Development Corp UK
•
Filing: 1956-05-18
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Granted: 1961-05-09
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Expires: 1976-05-18
Abstract
No abstract record available.
Inventors
- 👤 Coales John Flavell
- 👤 Noton Arnold Roy Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:25
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1445; G05D3/1454
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2420891A
Cited
US2701328A
Cited
US2771243A
Cited
US2862167A
Cited
US2804264A
Cited
US2829329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |