Patent US3014540A successfully refreshed from Google Patents.
US3014540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk harrow with extension gangs
Assignee: Deere and Co
•
Filing: 1958-12-05
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Granted: 1961-12-26
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Expires: 1978-12-05
Abstract
No abstract record available.
Inventors
- 👤 Charles H Youngberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:04
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2002272A
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US2098116A
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US2114549A
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US2226586A
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US2377521A
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US2580100A
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US2768567A
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US2765609A
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US2881578A
Cited
US2869305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |