Patent US2512322A successfully refreshed from Google Patents.
US2512322A
Expired / Lapsed
US
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Wide speed range control
Assignee: Westinghouse Electric Corp
•
Filing: 1946-11-27
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Granted: 1950-06-20
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Expires: 1966-11-27
Abstract
No abstract record available.
Inventors
- 👤 Frisch Erling
- 👤 William O Osbon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2335874A
Cited
US2431252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |