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Patent US2952167A successfully refreshed from Google Patents.
US2952167A
Expired / Lapsed
US
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Variable speed transmission
Assignee: Individual
•
Filing: 1957-10-28
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Granted: 1960-09-13
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Roy A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:25
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; F16H2009/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1574620A
Cited
US2299921A
Cited
US2646696A
Cited
US2755683A
Cited
US2760386A
Cited
US2714825A
Cited
US2774254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |