US2856758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable nozzle cooling turbine
Assignee: Douglas Aircraft Co Inc
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Filing: 1955-10-31
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Granted: 1958-10-21
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Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Eggleston Glen Elwood
- 👤 Reino E Luoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:48
CPC Classifications
F; F02; F02C; F02C6/00; F02C6/04; F02C6/06; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/165
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |