US2889716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable and reversing power transmission
Assignee: Individual
•
Filing: 1955-12-20
•
Granted: 1959-06-09
•
Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Richard B Doty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H37/0846; F16H9/00; F16H9/02; F16H9/04; F16H9/12; F16H9/16; F16H2009/166
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1127203A
Cited
US1243240A
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US1752708A
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US2031712A
Cited
US2164818A
Cited
GB495853A
Cited
US2202384A
Cited
US2179053A
Cited
US2181373A
Cited
US2446462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |