US2699917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine wheel and blade construction
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1946-08-24
•
Granted: 1955-01-18
•
Expires: 1966-08-24
Abstract
No abstract record available.
Inventors
- 👤 Archie T Colwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:17
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/181; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306470A
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US1114564A
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US1501862A
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DE491738C
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US1938686A
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DE665762C
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US2256479A
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US2292072A
Cited
CH229933A
Cited
US2369795A
Cited
US2407164A
Cited
FR907059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |