US3605904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Agricultural ploughs
Assignee: Individual
•
Filing: 1969-04-30
•
Granted: 1971-09-20
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Expires: 1989-04-30
Abstract
Abstract A REVERSIBLE PLOUGH HAS TWO SETS OF PLOUGH BODIES MOUNTED ON A BEAM STRUCTURE, THE REAR END OF WHICH IS MOUNTED ON STEERABLE DEPTH CONTROL WHEELS MOUNTED ON A BOGEY, THE STEERING OF THE PLOUGH BEING ACHIEVED BY THE SUPERIMPOSED EFFECTS OF ANGLING THE BOGEY WITH RESPECT TO THE PLOUGH BEAM AND ANGLING THE WHEELS WITH RESPECT TO THE BOGEY FRAME.
Inventors
- 👤 Roger Hugh Rutterford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:43
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/46; A01B3/464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |