US2927654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive means for a mine haulage vehicle
Assignee: Consolidation Coal Co
•
Filing: 1957-04-26
•
Granted: 1960-03-08
•
Expires: 1977-04-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:54
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/02; E21F13/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1192277A
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US1812801A
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US2203282A
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US2080477A
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US2623604A
Cited
US2754015A
Cited
US2719442A
Cited
US2768538A
Cited
US2803149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |