Patent US2644388A successfully refreshed from Google Patents.
US2644388A
Expired / Lapsed
US
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Bearing construction for disk harrows
Assignee: Deere and Co
•
Filing: 1947-09-04
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Granted: 1953-07-07
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Expires: 1967-09-04
Abstract
No abstract record available.
Inventors
- 👤 William P Oehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:14
CPC Classifications
A; A01; A01B; A01B23/00; A01B23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US893682A
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US1679844A
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US1698162A
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US1792711A
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US2076693A
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US2020545A
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US2097244A
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US2264783A
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US2394276A
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US2421306A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |