Patent US1889120A successfully refreshed from Google Patents.
US1889120A
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US
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Fluid pressure water system
Assignee: Westinghouse Air Brake Co
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Filing: 1930-05-24
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Granted: 1932-11-29
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Expires: 1950-05-24
Abstract
No abstract record available.
Inventors
- 👤 Patrick H Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:11
CPC Classifications
B; B61; B61D; B61D35/00; B61D35/002; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7795
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1935-11-29 | 1936-05-30 | 1936-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-29 | 1940-05-30 | 1940-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-29 | 1944-05-30 | 1944-11-29 | $7700.00 | Window Closed / Lapsed |