Patent US2856960A successfully refreshed from Google Patents.
US2856960A
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Control valve with relief and unloading means
Assignee: New York Air Brake LLC
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Filing: 1955-10-13
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Granted: 1958-10-21
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Expires: 1975-10-13
Abstract
No abstract record available.
Inventors
- 👤 Hugh J Stacey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:56
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/20; F16K11/22; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/8671; Y10T137/87169; Y10T137/87177; Y10T137/87185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2057088A
Cited
US2289567A
Cited
US2489435A
Cited
US2586932A
Cited
US2651324A
Cited
US2745433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |