Patent US2650460A successfully refreshed from Google Patents.
US2650460A
Expired / Lapsed
US
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Spirally arranged toothed cultivator wheel
Assignee: NORMAN G GILBERT
•
Filing: 1948-05-14
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Granted: 1953-09-01
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Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 George A Newhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:07
CPC Classifications
A; A01; A01B; A01B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US418106A
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US591414A
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US795421A
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US1018605A
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US1062617A
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US1363444A
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US1496242A
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US1844255A
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US2192877A
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US2468776A
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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) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |