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Patent US2806990A successfully refreshed from Google Patents.
US2806990A
Expired / Lapsed
US
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Regulator for an alternator
Assignee: North American Aviation Corp
•
Filing: 1953-08-21
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Granted: 1957-09-17
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Expires: 1973-08-21
Abstract
No abstract record available.
Inventors
- 👤 Robert P Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:02
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2184371A
Cited
US2477990A
Cited
US2477988A
Cited
US2456938A
Cited
US2677097A
Cited
US2709776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |