US2840140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seat
Assignee: Deere and Co
•
Filing: 1954-04-01
•
Granted: 1958-06-24
•
Expires: 1974-04-01
Abstract
No abstract record available.
Inventors
- 👤 Roy E Harrington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:38
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/50; B60N2/502; B60N2/505; B60N2/506; B60N2/507; B60N2/54; B60N2/544
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289854A
Cited
US2591144A
Cited
US2558049A
Cited
US2503796A
Cited
US2574057A
Cited
US2667209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |