US2590330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft cabin pressure regulator
Assignee: Individual
•
Filing: 1947-06-06
•
Granted: 1952-03-25
•
Expires: 1967-06-06
Abstract
No abstract record available.
Inventors
- 👤 Rudolph E Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2224394A
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US2463487A
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US2433206A
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US2441592A
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US2424491A
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US2413027A
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US2399326A
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US2441088A
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US2393343A
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US2463491A
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US2436183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |