US2925825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance check valve
Assignee: Stewart Warner Corp
•
Filing: 1954-05-04
•
Granted: 1960-02-23
•
Expires: 1974-05-04
Abstract
No abstract record available.
Inventors
- 👤 Staiger Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:26
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; F16K15/033; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7859; Y10T137/7898; Y10T137/7901; Y10T137/7903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US107605A
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US244879A
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US468985A
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US887782A
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US922262A
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US1352735A
Cited
US1800157A
Cited
US2095842A
Cited
US2359008A
Cited
US2505757A
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US2514838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |