Patent US2763991A successfully refreshed from Google Patents.
US2763991A
Expired / Lapsed
US
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Device for treating soil
Assignee: Individual
•
Filing: 1952-06-19
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Granted: 1956-09-25
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Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Woodrow A Kennon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
A; A01; A01G; A01G25/00; A01G25/06; A01M; A01M17/00; A01M17/002; E; E02; E02B; E02B11/00; E02B11/005; F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/032
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875504A
Cited
DE212721C
Cited
US1173534A
Cited
US1513937A
Cited
GB283035A
Cited
GB409585A
Cited
US2084005A
Cited
US2346029A
Cited
US2445717A
Cited
US2525897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |