US2990890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In row cultivator
Assignee: Individual
•
Filing: 1959-07-17
•
Granted: 1961-07-04
•
Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Butterfield Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:50
CPC Classifications
A; A01; A01B; A01B39/00; A01B39/08; A01B33/00; A01B33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1511242A
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US1691352A
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US1533701A
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FR649999A
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GB369423A
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US2410273A
Cited
US2558822A
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US2455369A
Cited
US2614473A
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US2684495A
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US2792769A
Cited
US2913058A
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US2805612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |