US2894498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple speed drive and control system
Assignee: Motors Liquidation Co
•
Filing: 1957-01-04
•
Granted: 1959-07-14
•
Expires: 1977-01-04
Abstract
No abstract record available.
Inventors
- 👤 Chaplin Albin
- 👤 Virgin C Reddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:45
CPC Classifications
F; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371983A
Cited
US2374305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |