Patent US3553945A successfully refreshed from Google Patents.
US3553945A
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US
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Assignee: Unisys Corp
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Filing: 1969-08-22
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Granted: 1971-01-12
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Expires: 1989-08-22
Abstract
Abstract AN AGRICULTURE MACHINE FOR MOWING, CONDITIONING, AND WINDROWING CROP MATERIAL AND HAVING A HEADER PIVOTALLY MOUNTED ON A VERTICALLY ADJUSTABLE FRAME. A CONTROL SYSTEM IS PROVIDED TO REGULATE THE OPERATING HEIGHT OF THE HEADER AND THE INCLINATION OF THE HEADER RELATIVE TO THE GROUND.
Inventors
- 👤 Joseph H Cyr
- 👤 Horace G Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:28
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/28; A01D43/00; A01D43/10; A01D43/107; Y; Y10; Y10S; Y10S56/00; Y10S56/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |