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US2963097A
Expired / Lapsed
US
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Tractor-mounted two-way plow
Assignee: Deere and Co
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Filing: 1959-04-16
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Granted: 1960-12-06
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Expires: 1979-04-16
Abstract
No abstract record available.
Inventors
- 👤 Walter H Silver
- 👤 William V Lohrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:57
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/36; A01B3/40; A01B3/42; A01B3/426; A01B5/00; A01B5/10; A01B5/14; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2648267A
Cited
DE822627C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |