US2857093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator casing and blade assembly
Assignee: Cincinnati Testing and Research Laboratories
•
Filing: 1954-12-02
•
Granted: 1958-10-21
•
Expires: 1974-12-02
Abstract
No abstract record available.
Inventors
- 👤 Elmer P Warnken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:34
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/04; F01D9/042
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR375059A
Cited
US1080825A
Cited
GB572859A
Cited
GB599391A
Cited
US2640319A
Cited
GB660383A
Cited
GB702549A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |