US2714943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1949-11-30
•
Granted: 1955-08-09
•
Expires: 1969-11-30
Abstract
No abstract record available.
Inventors
- 👤 Fred S Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:08
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/14; F16D65/28; B; B66; B66D; B66D5/00; B66D5/02; B66D5/24; B66D5/26; B66D2700/00; B66D2700/03; B66D2700/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US614346A
Cited
US1726599A
Cited
US1977895A
Cited
DE630646C
Cited
AU60536A
Cited
US2416222A
Cited
US2578388A
Cited
US2544997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-08 | 1959-02-07 | 1959-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-08 | 1963-02-07 | 1963-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-08 | 1967-02-07 | 1967-08-09 | $7700.00 | Window Closed / Lapsed |