US2575237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage bladed rotor
Assignee: Wright Aeronautical Corp
•
Filing: 1947-04-10
•
Granted: 1951-11-13
•
Expires: 1967-04-10
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Sollinger
- 👤 Martin M Holben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:46
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/066; F05; F05B; F05B2260/00; F05B2260/30; F05B2260/301; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1551402A
Cited
US1221087A
Cited
US1118361A
Cited
GB394001A
Cited
US2211866A
Cited
US2308233A
Cited
US2334285A
Cited
US2427614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |