Patent US2667745A successfully refreshed from Google Patents.
US2667745A
Expired / Lapsed
US
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Control valve for fluid operated lifts
Assignee: Tenneco Automotive Inc
•
Filing: 1948-02-14
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Granted: 1954-02-02
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Expires: 1968-02-14
Abstract
No abstract record available.
Inventors
- 👤 Smith Charles Joseph
- 👤 Esdale William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:54
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/02; A01B63/10; A01B63/1006; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86654; Y10T137/86863; Y10T137/87169; Y10T137/87177
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |