Patent US2757504A successfully refreshed from Google Patents.
US2757504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor mounted mower and lifting means therefor
Assignee: Ferguson Harry Inc
•
Filing: 1953-04-07
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Granted: 1956-08-07
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Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Lee E Elfes
- 👤 Leo J Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:10
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/24; A01D34/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2130795A
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US2204335A
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US2328838A
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US2329881A
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US2314216A
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US2504686A
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US2502805A
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US2617242A
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US2568931A
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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) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |