US3481221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed transmission
Assignee: BATSON COOK Co
•
Filing: 1967-03-17
•
Granted: 1969-12-02
•
Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jack C Gaskins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:37
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H37/0846
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US581286A
Cited
US1746029A
Cited
US2049065A
Cited
US2164818A
Cited
CH227479A
Cited
GB879157A
Cited
US3000584A
Cited
US3354748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |