US2989999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire inflation control system
Assignee: Westinghouse Air Brake Co
•
Filing: 1960-05-13
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Granted: 1961-06-27
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Expires: 1980-05-13
Abstract
No abstract record available.
Inventors
- 👤 Edward L Holbrook
- 👤 Ernst W Spannhake
- 👤 Fred S Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:46
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/001; B60C23/003; B60C23/00372; B60C23/00309; B60C23/00318; B60C23/00345; B60C23/00354; Y; Y10; Y10T; Y10T137/00; Y10T137/3584; Y10T137/36; Y10T137/3646; Y10T137/8593; Y10T137/86493; Y10T137/86879; Y10T137/87169; Y10T137/87233
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) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |