US2785773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Break away valve for tractor-trailer brake system
Assignee: Wabco Automotive UK Ltd
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Filing: 1953-03-24
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Granted: 1957-03-19
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Expires: 1973-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jeffrey George Alan
- 👤 Heacock Frederick Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:58
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F16K17/22; F16K17/32; B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T17/00; B60T17/18; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/265; Y10T137/2655; Y10T137/7722; Y10T137/7781; Y10T137/7832; Y10T137/7835; Y10T137/7836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |