US3439549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission with automatically varying ratio
Assignee: Individual
•
Filing: 1967-10-20
•
Granted: 1969-04-22
•
Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 Huschang Sabet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:53
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/063; F01C1/07; F02; F02B; F02B53/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18416
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR359959A
Cited
GB190928318A
Cited
US977260A
Cited
GB191105048A
Cited
GB203760A
Cited
US1556843A
Cited
AT128809B
Cited
FR1313527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |