Patent US2870873A successfully refreshed from Google Patents.
US2870873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tread brake unit for railway vehicles
Assignee: Westinghouse Air Brake Co
•
Filing: 1956-05-31
•
Granted: 1959-01-27
•
Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Emil G Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:21
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; B; B60; B60T; B60T17/00; B60T17/08; B60T17/081; F16D65/02; F16D65/04; F16D65/06; F16D65/062
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US406844A
Cited
GB190309154A
Cited
US1040846A
Cited
US1148026A
Cited
US1612781A
Cited
US1916470A
Cited
US2543326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |