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US2561032A
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Hydraulic reversible disk plow
Assignee: PHILLIPS FOUNDRY Co
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Filing: 1949-08-09
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Granted: 1951-07-17
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Expires: 1969-08-09
Abstract
No abstract record available.
Inventors
- 👤 George R Onfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:05
CPC Classifications
A; A01; A01B; A01B5/00; A01B5/10; A01B5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2041216A
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US2269502A
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US2322342A
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US2320624A
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US2336848A
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US2453197A
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US2456693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |