US2484006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control system for motors
Assignee: Westinghouse Electric Corp
•
Filing: 1947-09-27
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Granted: 1949-10-11
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Expires: 1967-09-27
Abstract
No abstract record available.
Inventors
- 👤 Earl B Ankenman
- 👤 Clare E Center
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:29
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; H02P5/52; H02P5/56
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2102911A
Cited
US2322985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-10 | 1953-04-11 | 1953-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-10 | 1957-04-11 | 1957-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-10 | 1961-04-11 | 1961-10-11 | $7700.00 | Window Closed / Lapsed |