Patent US2811089A successfully refreshed from Google Patents.
US2811089A
Expired / Lapsed
US
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Steering means for row crop cultivators and the like
Assignee: Individual
•
Filing: 1955-03-25
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Granted: 1957-10-29
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 James B Blackstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:19
CPC Classifications
A; A01; A01B; A01B69/00; A01B69/003; A01B69/004; A01B69/007; A01B69/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US921004A
Cited
US1209430A
Cited
US1731220A
Cited
US1753712A
Cited
US1850717A
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US2156977A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |