US2769458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump check valve
Assignee: Studebaker Packard Corp
•
Filing: 1952-10-28
•
Granted: 1956-11-06
•
Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Misch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:21
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16K; F16K15/00; F16K15/14; F16K15/1401; F16K15/1402; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7879; Y10T137/8593; Y10T137/85978; Y10T137/86131; Y10T137/86163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US303702A
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US310935A
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GB190618175A
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US978152A
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GB191309764A
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US1229457A
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US1697004A
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US1791449A
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US1938369A
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US2065062A
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GB488924A
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US2599499A
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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) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |