Patent US2424764A successfully refreshed from Google Patents.
US2424764A
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Cabin pressure control apparatus
Assignee: Stewart Warner Corp
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Filing: 1943-03-31
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Granted: 1947-07-29
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Expires: 1963-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1575725A
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US1826202A
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US2002057A
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US2208554A
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GB521623A
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US2342220A
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US2358835A
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US2316416A
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US2391197A
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US2413027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |