US2594576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1944-12-28
•
Granted: 1952-04-29
•
Expires: 1964-12-28
Abstract
No abstract record available.
Inventors
- 👤 Harry C May
- 👤 Roy R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:54
CPC Classifications
F; F02; F02D; F02D27/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87249
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US345056A
Cited
US553851A
Cited
US711755A
Cited
US845708A
Cited
US1507973A
Cited
US1947616A
Cited
US2091110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |