Patent US3717985A successfully refreshed from Google Patents.
US3717985A
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US
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Mower blade
Assignee: Dayco Products LLC
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Filing: 1968-08-21
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Granted: 1973-02-27
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Expires: 1988-08-21
Abstract
Abstract A FLEXIBLE MOWER BLADE HAVING CUTTING ARMS FORMED OF AN ELASTOMERIC MATERIAL SUCH AS URETHANE AND HAVING A RIGID INSERT WITHIN EACH ARM TERMINATING SHORT OF THE CUTTING EDGES. THE ARMS ARE SECURED TO A RIGID MEMBER WHICH IS MOUNTED ON THE LAWN MOWER SHAFT. D R A W I N G
Inventors
- 👤 A Freedlander
- 👤 W Garrett
- 👤 R Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:21
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/73
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |