US3605391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Header height control
Assignee: Deutz Allis Corp
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Filing: 1969-05-19
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Granted: 1971-09-20
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Expires: 1989-05-19
Abstract
Abstract A COMBINED ELECTRICAL, MECHANICAL AND HYDRAULIC MECHANISM FOR MAINTAINING THE HEIGHT OF A COMBINE HARVESTER HEADER RELATIVE TO THE GROUND AT A CONSTANT HEIGHT AND WHEREIN HYDRAULIC MEANS ARE PROVIDED FOR CONTROLLING THE ACCELERATION AND DECELERATION OF SUCH HEADER AS IT IS BEING MOVED UPWARDLY OR DOWNWARDLY IN RESPONSE TO A HEIGHT SIGNAL.
Inventors
- 👤 Robert E Schott
- 👤 Ramkishan Khatti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:45
CPC Classifications
A; A01; A01D; A01D41/00; A01D41/12; A01D41/14; A01D41/141; Y; Y10; Y10S; Y10S56/00; Y10S56/15
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 |