US2989983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load control valve for vehicle air springs
Assignee: Bendix Westinghouse Automotive Air Brake Co
•
Filing: 1957-09-13
•
Granted: 1961-06-27
•
Expires: 1977-09-13
Abstract
No abstract record available.
Inventors
- 👤 Harry M Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:51
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/02; B60G17/04; B60G17/052; B60G17/0523; B60G17/0525; F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; Y; Y10; Y10S; Y10S280/00; Y10S280/01; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/4343; Y10T137/8593; Y10T137/86919; Y10T137/87265; Y10T137/87499; Y10T137/87507; Y10T137/87515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1126070A
Cited
US1406026A
Cited
US1948773A
Cited
US2101468A
Cited
US2417217A
Cited
US2538806A
Cited
US2687311A
Cited
US2787475A
Cited
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 |