Patent US2783699A successfully refreshed from Google Patents.
US2783699A
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Ripper plows
Assignee: LEON O KELLEY
•
Filing: 1953-02-19
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Granted: 1957-03-05
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Expires: 1973-02-19
Abstract
No abstract record available.
Inventors
- 👤 Carlton O Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:58
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/30; E02F5/32; A; A01; A01B; A01B13/00; A01B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US36892A
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US222275A
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US1931783A
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US1969684A
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US2281928A
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US2416654A
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US2619890A
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US2573977A
Cited
US2517426A
Cited
US2642791A
Cited
FR990063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |