US2685296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shuttle valve
Assignee: Parker Appliance Co
•
Filing: 1950-11-24
•
Granted: 1954-08-03
•
Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Frank C Boosman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:30
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/044; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US870806A
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US1609641A
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US1741720A
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GB349520A
Cited
US2354791A
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US2431437A
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US2414908A
Cited
US2481460A
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GB592607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |