US2915146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear compensating means
Assignee: Consolidation Coal Co
•
Filing: 1957-12-31
•
Granted: 1959-12-01
•
Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Lee
- 👤 Arthur B Coval
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/72; F16D65/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US799690A
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US2089733A
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US2127557A
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US2358740A
Cited
US2474961A
Cited
US2644549A
Cited
US2746254A
Cited
US2778451A
Cited
GB760877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |