US2721431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snapping roll control connection to clutch of mounting tractor
Assignee: Deere Manufacturing Co
•
Filing: 1952-04-05
•
Granted: 1955-10-25
•
Expires: 1972-04-05
Abstract
No abstract record available.
Inventors
- 👤 Norman F Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:31
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02; A01D45/021; A01D45/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1160777A
Cited
US1836767A
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US1820570A
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US2152273A
Cited
US2525481A
Cited
US2636330A
Cited
US2645075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |