US2778290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk plow
Assignee: Case LLC
•
Filing: 1951-04-19
•
Granted: 1957-01-22
•
Expires: 1971-04-19
Abstract
No abstract record available.
Inventors
- 👤 Clarett B Greeson
- 👤 Richard W Bushmeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:36
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1265322A
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US1619904A
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US1928952A
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US1931815A
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US2280846A
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US2392006A
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US2448469A
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US2620717A
Cited
US2532577A
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US2555554A
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US2538093A
Cited
US2526186A
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US2577885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |