US2498888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winged cultivator
Assignee: JOHN DEERE VAN BRUNT CO
•
Filing: 1944-09-28
•
Granted: 1950-02-28
•
Expires: 1964-09-28
Abstract
No abstract record available.
Inventors
- 👤 William A Hyland
- 👤 Ernst E Schnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:54
CPC Classifications
A; A01; A01B; A01B19/00; A01B19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US399628A
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US499415A
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US1034753A
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US829766A
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US958567A
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US1404544A
Cited
US1531975A
Cited
DE439787C
Cited
US2221769A
Cited
US2266819A
Cited
US2298161A
Cited
US2302842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-27 | 1953-08-29 | 1954-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-27 | 1957-08-29 | 1958-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-27 | 1961-08-29 | 1962-02-28 | $7700.00 | Window Closed / Lapsed |