US2614815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft cabin pressurizing and air conditioning apparatus
Assignee: Bristol Aeroplane Co Ltd
•
Filing: 1948-01-19
•
Granted: 1952-10-21
•
Expires: 1968-01-19
Abstract
No abstract record available.
Inventors
- 👤 Marchant Francis Charles Ivor
- 👤 Lewis Gordon Manns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:33
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D2013/0603
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US946069A
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US1986529A
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US2077315A
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US2063477A
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US2293557A
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US2244319A
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US2485522A
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US2496602A
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US2509899A
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US2485590A
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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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |