US2961889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor loaders
Assignee: Frank G Hough Co
•
Filing: 1957-10-17
•
Granted: 1960-11-29
•
Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Thorvald G Granryd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:34
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/42; E02F3/43; E02F3/431; E02F3/434; F; F15; F15B; F15B11/00; Y; Y10; Y10S; Y10S74/00; Y10S74/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1689537A
Cited
US1997682A
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US2026777A
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US2340241A
Cited
US2455082A
Cited
US2573472A
Cited
US2661806A
Cited
US2580449A
Cited
US2653487A
Cited
US2692513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |