US2941133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic speed-varying control
Assignee: Reliance Electric and Engineering Co
•
Filing: 1954-09-23
•
Granted: 1960-06-14
•
Expires: 1974-09-23
Abstract
No abstract record available.
Inventors
- 👤 William E Springer
- 👤 John S Michie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:43
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1686916A
Cited
US1662133A
Cited
US2171741A
Cited
US2342089A
Cited
US2648040A
Cited
US2682781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |