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US2834927A
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US
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Motor control system responsive to counter electromotive force
Assignee: Allis Chalmers Corp
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Filing: 1953-11-18
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Granted: 1958-05-13
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Expires: 1973-11-18
Abstract
No abstract record available.
Inventors
- 👤 Allan C Halter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:46
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2733395A
Cited
US1175321A
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US1783520A
Cited
US2401164A
Cited
US2456938A
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US2629847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |