Patent US2801619A successfully refreshed from Google Patents.
US2801619A
Expired / Lapsed
US
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Power steering unit having simplified control valve
Assignee: Old Carco LLC
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Filing: 1955-09-12
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Granted: 1957-08-06
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Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Walter E Folkerts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:00
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/08; B62D5/087; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241; Y10T137/877; Y10T137/87708; Y10T137/87724; Y10T137/87732; Y10T137/87748
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |