US2481017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement control device
Assignee: Deere and Co
•
Filing: 1945-04-30
•
Granted: 1949-09-06
•
Expires: 1965-04-30
Abstract
No abstract record available.
Inventors
- 👤 Ellsworth T Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:11
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/24; A01B63/32; A01D; A01D41/00; A01D41/04; A01D67/00; A01D67/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219477A
Cited
US738498A
Cited
US1987159A
Cited
US2237710A
Cited
US2324563A
Cited
US2375912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |