Patent US2476844A successfully refreshed from Google Patents.
US2476844A
Expired / Lapsed
US
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Motor control circuit
Assignee: AT&T Inc
•
Filing: 1946-04-03
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Granted: 1949-07-19
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Expires: 1966-04-03
Abstract
No abstract record available.
Inventors
- 👤 Richard C Davis
- 👤 Robert H Gumley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/16; G09B9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1960350A
Cited
US2421632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |