US2860737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlocked pneumatic and magnetic fluid brake system
Assignee: Westinghouse Air Brake Co
•
Filing: 1954-05-04
•
Granted: 1958-11-18
•
Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Claude M Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/66; B60T13/665; B61; B61H; B61H11/00; B61H7/00; B61H7/02; B61H7/04; B61H7/06; B61H7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1805630A
Cited
US2219518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |