US3564822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Full floating mower
Assignee: Douglass Industries Inc
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Filing: 1968-11-21
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Granted: 1971-02-23
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Expires: 1988-11-21
Abstract
Abstract A MOWER, INTENDED TO BE DRAWN BY A PULLING BODY SUCH AS A TRACTOR, THE MOWER HAVING A RIDIG FRAME, INDEPENDENTLY MOUNTED AND TRIANGULARLY SPACED WHEEL STRUCTURE PLURAL CUTTING BLADES PERMITTING A WIDE CUTTING SWATH WITHIN THE UNITARY RIGID FRAME. THE LINKAGE TO THE PULLING BODY PERMITS RELATIVE VERTICAL MOTION OF THE MOWER RELATIVE TO THE TRACTOR AS WELL AS RELATIVE TWISTING MOTION, BUT RESTRICTS RELATIVE LATERAL MOTION.
Inventors
- 👤 Anthony R Engler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:16
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |