Patent US2997835A successfully refreshed from Google Patents.
US2997835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing attachment for tractors or the like
Assignee: Individual
•
Filing: 1959-03-12
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Granted: 1961-08-29
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Expires: 1979-03-12
Abstract
No abstract record available.
Inventors
- 👤 Stewart Lyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:04
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1911516A
Cited
US1897543A
Cited
US1953394A
Cited
US2457693A
Cited
US2588004A
Cited
US2815048A
Cited
US2832183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |