Patent US2666356A successfully refreshed from Google Patents.
Patent US2431660A successfully refreshed from Google Patents.
US2431660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine blade
Assignee: BBC Brown Boveri AG Germany
•
Filing: 1945-12-06
•
Granted: 1947-11-25
•
Expires: 1965-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gaudenzi Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; Y; Y10; Y10S; Y10S264/00; Y10S264/36; Y10S60/00; Y10S60/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12486
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-24 | 1951-05-26 | 1951-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-24 | 1955-05-26 | 1955-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-24 | 1959-05-26 | 1959-11-25 | $7700.00 | Window Closed / Lapsed |