US2904960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsating brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1956-09-07
•
Granted: 1959-09-22
•
Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Burton S Aikman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:46
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; B60T13/249; B60T8/00; B60T8/32; B60T8/34; B60T8/44; B60T8/447; B60T8/448
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2270585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |