US2818007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible disk plow
Assignee: Deere and Co
•
Filing: 1954-04-06
•
Granted: 1957-12-31
•
Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Walter H Silver
- 👤 Robert E Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:15
CPC Classifications
A; A01; A01B; A01B5/00; A01B5/04; A01B5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675749A
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US2485932A
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US2546554A
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US2582478A
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US2648267A
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US2698563A
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US2724313A
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US2644694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |