US2501707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake cylinder device
Assignee: Westinghouse Air Brake Co
•
Filing: 1948-07-03
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Granted: 1950-03-28
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Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Bent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:14
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/081; B60T8/00; B60T8/18; B60T8/1893; B61; B61H; B61H15/00; B61H15/0007; F; F16; F16J; F16J1/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7846; Y10T137/8593; Y10T137/86928; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32622
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |