Patent US1838823A successfully refreshed from Google Patents.
US2790367A
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US
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Cultivator disk gangs
Assignee: Individual
•
Filing: 1953-09-23
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Granted: 1957-04-30
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Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 William E Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:12
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08; A01B21/086; A01B35/00; A01B35/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US671539A
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US861704A
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US1074502A
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US1203737A
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US1760940A
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US2603541A
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US2556492A
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US2715554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |