Patent US3827587A successfully refreshed from Google Patents.
US2525804A
Expired / Lapsed
US
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Aircraft rotary boiler turbine air condenser power plant
Assignee: Individual
•
Filing: 1945-05-02
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Granted: 1950-10-17
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Expires: 1965-05-02
Abstract
No abstract record available.
Inventors
- 👤 Robert B Kellogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:50
CPC Classifications
F; F01; F01K; F01K11/00; F01K11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |