Patent US2889788A successfully refreshed from Google Patents.
US2889788A
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US
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Double level tiller planter
Assignee: Individual
•
Filing: 1956-04-20
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Granted: 1959-06-09
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Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Margery S Van Dorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:40
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/06; A01C5/00; A01C5/06; A01C5/062; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US904410A
Cited
US1254266A
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US1869723A
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US1876776A
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US1908903A
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US2159652A
Cited
US2322332A
Cited
US2577363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |