US2579904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulating valve for hydraulic brake systems
Assignee: TIRIPS CORP
•
Filing: 1950-04-27
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Granted: 1951-12-25
•
Expires: 1970-04-27
Abstract
No abstract record available.
Inventors
- 👤 Frank G Castner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:21
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87257; Y10T137/87265; Y10T137/8733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1087945A
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US1756056A
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US1577446A
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US1923127A
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US1888392A
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US2181699A
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US2271031A
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US2285781A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |