Patent US2811287A successfully refreshed from Google Patents.
US2811287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed drill
Assignee: Individual
•
Filing: 1954-06-14
•
Granted: 1957-10-29
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Melvin E Sackeft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:58
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/08; B; B01; B01F; B01F31/00; B01F31/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US29351A
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US114384A
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US163748A
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US446636A
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US467207A
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US1303222A
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US642050A
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US860695A
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US1497772A
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US2429841A
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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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |