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Patent US2628467A successfully refreshed from Google Patents.
US2628467A
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US
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Mower attachment for tractors
Assignee: FEATHERSTONE AGRICULTURAL Ltd
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Filing: 1949-10-04
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Granted: 1953-02-17
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Expires: 1969-10-04
Abstract
No abstract record available.
Inventors
- 👤 Gillespie Sydney Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:04
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/03; A01D34/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE564087C
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US1074188A
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US1855838A
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US1963913A
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US2060280A
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US2098948A
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US2328838A
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US2289598A
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US2422044A
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US2457693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |