US3022831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor draft load control system
Assignee: Deere and Co
•
Filing: 1957-04-22
•
Granted: 1962-02-27
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Christian H Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:40
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/111; A01B63/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US977364A
Cited
US1281357A
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US1940061A
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US2420530A
Cited
US2688908A
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US2714346A
Cited
US2702501A
Cited
US2730029A
Cited
US2940530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |