US2575958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electropneumatic brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1949-05-18
•
Granted: 1951-11-20
•
Expires: 1969-05-18
Abstract
No abstract record available.
Inventors
- 👤 Claude M Hines
- 👤 Walter B Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:56
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/58; B60T13/66; B60T13/665
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2038174A
Cited
US2068340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |