US2779565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooling of turbine blades
Assignee: Individual
•
Filing: 1948-01-05
•
Granted: 1957-01-29
•
Expires: 1968-01-05
Abstract
No abstract record available.
Inventors
- 👤 Bruno W Bruckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:39
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/08; F01D5/085; F01D5/087; F01D5/12; F01D5/14; F01D5/18; F01D5/187; F01D5/188; F01D5/189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1325208A
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DE369996C
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US1657192A
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DE420781C
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US1708402A
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US1966104A
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US2073605A
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US2401826A
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US2393963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |