US2824769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load brake mechanism
Assignee: Westinghouse Air Brake Co
•
Filing: 1954-04-06
•
Granted: 1958-02-25
•
Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:58
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/18; B60T8/1837; B60T8/1856; B60T8/1862
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430024A
Cited
US1720284A
Cited
US2155225A
Cited
US2367598A
Cited
US2364927A
Cited
US2402434A
Cited
US2450464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |