US2485655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust turbine driven fan and supercharger
Assignee: Individual
•
Filing: 1944-07-21
•
Granted: 1949-10-25
•
Expires: 1964-07-21
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Polk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:20
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/005; F02B37/22; F02B39/00; F02B39/02; F02B39/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1410726A
Cited
US1525212A
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DE398902C
Cited
US1732578A
Cited
US1731708A
Cited
GB321933A
Cited
US1900586A
Cited
US2274743A
Cited
US2384381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |