Patent US2764077A successfully refreshed from Google Patents.
US2764077A
Expired / Lapsed
US
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Shiftable cultivator
Assignee: Individual
•
Filing: 1950-11-02
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Granted: 1956-09-25
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Expires: 1970-11-02
Abstract
No abstract record available.
Inventors
- 👤 Elias P Pertics
- 👤 Emil E Pertics
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:38
CPC Classifications
A; A01; A01B; A01B33/00; A01B33/06; A01B33/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1003408A
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US1262286A
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US1541955A
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US1506042A
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US1577947A
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US1581404A
Cited
US1787228A
Cited
US2413429A
Cited
US2440757A
Cited
US2598219A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |