US3520318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller with asymmetrical feedback time constant
Assignee: BBC Brown Boveri AG Germany
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Filing: 1966-12-19
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Granted: 1970-07-14
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Artur Oberle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:53
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/44; G05B11/48; G05B11/50; F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2013; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |