US2485525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-control and deaerating device
Assignee: Rolls Royce PLC
•
Filing: 1945-10-22
•
Granted: 1949-10-18
•
Expires: 1965-10-22
Abstract
No abstract record available.
Inventors
- 👤 Bedale Paul Whibley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
F; F02; F02B; F02B1/00; F02M; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/438; F02M2700/4388
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1345895A
Cited
US1655647A
Cited
US1906334A
Cited
DE630932C
Cited
GB526988A
Cited
US2238502A
Cited
US2368529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |