Patent US2417822A successfully refreshed from Google Patents.
US2417822A
Expired / Lapsed
US
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Wheeled scraper
Assignee: Caterpillar Global Mining LLC
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Filing: 1944-01-17
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Granted: 1947-03-25
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Expires: 1964-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hoar Roger Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:36
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/657; E02F3/6454; E02F3/6472; E02F3/656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2301158A
Cited
US2361914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |