Patent US2960201A successfully refreshed from Google Patents.
US2960201A
Expired / Lapsed
US
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Direction controlling means for selfstarting synchronous motors
Assignee: Controls Company of America
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Filing: 1959-04-13
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Granted: 1960-11-15
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:40
CPC Classifications
G; G04; G04C; G04C15/00; G04C15/0009; G04C15/0045; H; H02; H02K; H02K7/00; H02K7/10; H02K7/118; H02K7/1185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB630171A
Cited
US2722297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |