Patent US2610564A successfully refreshed from Google Patents.
US2610564A
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US
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Ratio control for pressure cabins
Assignee: Boeing Co
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Filing: 1942-05-16
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Granted: 1952-09-16
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Expires: 1962-05-16
Abstract
No abstract record available.
Inventors
- 👤 James B Cooper
- 👤 Alfred B Jepson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:19
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02; Y; Y02; Y02T; Y02T50/00; Y02T50/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR514055A
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US2208554A
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US2265461A
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GB521623A
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US2276371A
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US2449231A
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US2284984A
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US2450881A
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US2407257A
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US2549690A
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US2549672A
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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) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |