Patent US4579492A successfully refreshed from Google Patents.
Patent US1766481A successfully refreshed from Google Patents.
Patent US2174380A successfully refreshed from Google Patents.
US2174380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making elastic fluid turbines
Assignee: General Electric Co
•
Filing: 1938-04-01
•
Granted: 1939-09-26
•
Expires: 1958-04-01
Abstract
No abstract record available.
Inventors
- 👤 John H Doran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:33
CPC Classifications
B; B23; B23K; B23K33/00; B23K33/004; B23K33/006; F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/063; B23K2101/00; B23K2101/001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4932
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) | 1942-09-25 | 1943-03-27 | 1943-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-09-25 | 1947-03-27 | 1947-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-09-25 | 1951-03-27 | 1951-09-26 | $7700.00 | Window Closed / Lapsed |