US2632465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversing valve for centralized lubricating systems
Assignee: Stewart Warner Corp
•
Filing: 1946-12-12
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Granted: 1953-03-24
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Expires: 1966-12-12
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Schweisthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:07
CPC Classifications
F; F16; F16N; F16N25/00; F16N25/02; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/8158; Y10T137/8326; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/87249
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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |