US2515946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1947-05-22
•
Granted: 1950-07-18
•
Expires: 1967-05-22
Abstract
No abstract record available.
Inventors
- 👤 Norman G Cadman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/04; B60T15/043; B60T15/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US552793A
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US2329742A
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US735544A
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US811765A
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US962517A
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US1218479A
Cited
US1827849A
Cited
US1957891A
Cited
US1940550A
Cited
US2289559A
Cited
US2324690A
Cited
US2392729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |