US2361084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain valve apparatus
Assignee: Westinghouse Air Brake Co
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Filing: 1943-05-31
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Granted: 1944-10-24
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Expires: 1963-05-31
Abstract
No abstract record available.
Inventors
- 👤 Canetta John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:06
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/12; F16T1/14; F16K; F16K47/00; F16K47/01; F16K47/011; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3102; Y10T137/3105; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/785; Y10T137/7851; Y10T137/7852; Y10T137/7853; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
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) | 1947-10-24 | 1948-04-24 | 1948-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-24 | 1952-04-24 | 1952-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-24 | 1956-04-24 | 1956-10-24 | $7700.00 | Window Closed / Lapsed |