Patent US2940193A successfully refreshed from Google Patents.
US2940193A
Expired / Lapsed
US
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Road grader attachment
Assignee: Individual
•
Filing: 1957-08-26
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Granted: 1960-06-14
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Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S Banks
- 👤 Omer A Poindexter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:42
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1466464A
Cited
US1843260A
Cited
US1987729A
Cited
US2011777A
Cited
US2067168A
Cited
US2601380A
Cited
US2718718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |