Patent US2917012A successfully refreshed from Google Patents.
US2917012A
Expired / Lapsed
US
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Disk fertilizer furrow opener attachment for planters
Assignee: Deere and Co
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Filing: 1957-01-29
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Granted: 1959-12-15
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Expires: 1977-01-29
Abstract
No abstract record available.
Inventors
- 👤 William P Oehler
- 👤 Arthur J Immesoete
- 👤 Edwin W Reeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:24
CPC Classifications
A; A01; A01C; A01C5/00; A01C5/06; A01C5/062; A01C5/064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |