US2924288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driven steerable wheels for mine haulage vehicles
Assignee: Consolidation Coal Co
•
Filing: 1957-02-26
•
Granted: 1960-02-09
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/02; E21F13/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305061A
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US1309266A
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US1184814A
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US1251345A
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US1396102A
Cited
US1635236A
Cited
US1953749A
Cited
US2395333A
Cited
US2381672A
Cited
US2623604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |