US2905508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure brake control apparatus with high pressure emergency feature
Assignee: Westinghouse Air Brake Co
•
Filing: 1955-12-29
•
Granted: 1959-09-22
•
Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 John W Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:15
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/18; B60T15/24; B60T15/30; B60T15/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US888207A
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US973179A
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US1938738A
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US2068317A
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US2152257A
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GB668122A
Cited
US2707134A
Cited
US2672376A
Cited
US2821442A
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 |