US2587047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor for disk brakes
Assignee: Westinghouse Air Brake Co
•
Filing: 1950-04-27
•
Granted: 1952-02-26
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Cecil S Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:07
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/12; F16D65/128; F16D69/00; F16D2069/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2238943A
Cited
US2368985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |