Patent US2628815A successfully refreshed from Google Patents.
US2628815A
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US
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Fairlead for semitrailer scrapers or wagons
Assignee: Caterpillar Global Mining LLC
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Filing: 1948-04-16
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Granted: 1953-02-17
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Expires: 1968-04-16
Abstract
No abstract record available.
Inventors
- 👤 William P Atkinson
- 👤 Trevor O Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:35
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/58; B60D1/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307989A
Cited
US1126153A
Cited
GB127144A
Cited
US1870690A
Cited
US2383978A
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US2414933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |