US3424433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailing edge construction in a radial turbine
Assignee: Pratt and Whitney Canada Corp
•
Filing: 1966-10-07
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Granted: 1969-01-28
•
Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert Hugh Langshur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:50
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/04; F01D5/043; F01D5/048; F01D5/045; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE838192C
Cited
CA498069A
Cited
US2889107A
Cited
FR1152972A
Cited
US3032315A
Cited
GB907216A
Cited
US3054554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |