Patent US2647530A successfully refreshed from Google Patents.
US2647530A
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US
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Unloader valve
Assignee: Bendix Aviation Corp
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Filing: 1948-01-30
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Granted: 1953-08-04
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Expires: 1968-01-30
Abstract
No abstract record available.
Inventors
- 👤 John S Jaquith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:43
CPC Classifications
F; F15; F15B; F15B1/00; F15B1/02; F15B1/027; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2612; Y10T137/2615
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US313249A
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US891284A
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US2196120A
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GB506088A
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US2235858A
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US2326462A
Cited
US2391790A
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US2395941A
Cited
US2375411A
Cited
US2496577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |