US2812985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure brake apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1955-04-08
•
Granted: 1957-11-12
•
Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Thomas
- 👤 Glenn T Mcclure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:28
CPC Classifications
B; B60; B60T; B60T15/00; B60T15/02; B60T15/18; B60T15/24; B60T15/30; B60T15/302; B60T15/304; B60T15/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1185947A
Cited
US1469585A
Cited
US1935808A
Cited
US2052188A
Cited
US2490998A
Cited
US2713989A
Cited
US2530723A
Cited
US2476054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |