Patent US3811894A successfully refreshed from Google Patents.
US3374847A
Expired / Lapsed
US
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Tractor driving effort responsive to pulled load
Assignee: Individual
•
Filing: 1965-10-21
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Granted: 1968-03-26
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Tadeusz Budzich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:31
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/42; F16H61/433; B; B60; B60K; B60K17/00; B60K17/34; B60K17/356; B60K28/00; B60K28/10; B60K28/16; F16H61/46; F16H61/472; B60W; B60W2530/00; B60W2530/203; B60W2530/207; F16H59/00; F16H59/50; F16H59/52; F16H2059/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |