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US2805376A
Expired / Lapsed
US
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Control arrangements for braking alternating current induction motors
Assignee: Metropolitan Vickers Electrical Co Ltd
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Filing: 1953-10-23
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Granted: 1957-09-03
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Expires: 1973-10-23
Abstract
No abstract record available.
Inventors
- 👤 Evans Owen Thomas
- 👤 Hathaway Richard
- 👤 Abram Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:18
CPC Classifications
H; H02; H02P; H02P3/00; H02P3/06; H02P3/18; H02P3/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191011336A
Cited
US1060252A
Cited
US2110906A
Cited
FR833946A
Cited
US2490458A
Cited
US2625672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |