US2437996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction motor control by electric brake
Assignee: English Electric Co Ltd
•
Filing: 1945-12-15
•
Granted: 1948-03-16
•
Expires: 1965-12-15
Abstract
No abstract record available.
Inventors
- 👤 Carnegie Herbert Stirling
- 👤 Dolan Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
H; H02; H02P; H02P25/00; H02P25/16; H02P25/24; H02P25/26; B; B66; B66C; B66C13/00; B66C13/18; B66C13/22; B66C13/23; B66C13/26; B66C2700/00; B66C2700/08; B66C2700/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2246295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |