US2715205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating system with exciter field winding in series with alternator field winding
Assignee: Allis Chalmers Corp
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Filing: 1953-05-18
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Granted: 1955-08-09
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 William L Ringland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:26
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2238811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |