US2472653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control mechanism
Assignee: Bendix Westinghouse Automotive Air Brake Co
•
Filing: 1944-05-27
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Granted: 1949-06-07
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Expires: 1964-05-27
Abstract
No abstract record available.
Inventors
- 👤 Wilfred A Eaton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:20
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/16; B; B64; B64C; B64C13/00; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/30505; F15B2211/3051; F15B2211/32; F15B2211/321; F15B2211/324; F15B2211/70; F15B2211/71; F15B2211/765; F15B2211/77; F15B2211/7716
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1707690A
Cited
US2003930A
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US2346820A
Cited
US2133275A
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US2277378A
Cited
US2273171A
Cited
CH219569A
Cited
US2351307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |