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Patent US2743568A successfully refreshed from Google Patents.
US2743568A
Expired / Lapsed
US
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Mower attachment for tractors
Assignee: Ferguson Harry Inc
•
Filing: 1952-08-21
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Granted: 1956-05-01
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Expires: 1972-08-21
Abstract
No abstract record available.
Inventors
- 👤 Lee E Elfes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:02
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/28; A01D34/283; A01D34/03; A01D34/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2105125A
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US2245451A
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US2299841A
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US2387070A
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US2533804A
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US2580265A
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US2413873A
Cited
US2550412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |