US2558810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure motor having a check for terminal operation thereof
Assignee: Westinghouse Air Brake Co
•
Filing: 1947-07-22
•
Granted: 1951-07-03
•
Expires: 1967-07-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Bent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:22
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US834825A
Cited
US840877A
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US850583A
Cited
FR794815A
Cited
US2193125A
Cited
US2259576A
Cited
US2387777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |