US2808772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cultivating and planting tool
Assignee: ALFRED J ELLINGTON
•
Filing: 1955-04-20
•
Granted: 1957-10-08
•
Expires: 1975-04-20
Abstract
No abstract record available.
Inventors
- 👤 Calvin M Mabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:57
CPC Classifications
A; A01; A01B; A01B51/00; A01B51/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US557080A
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US656988A
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US723380A
Cited
US1162068A
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US1336421A
Cited
US2156729A
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US2336152A
Cited
US2562486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |