Patent US2903237A successfully refreshed from Google Patents.
US2903237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator construction for axial-flow fluid machine
Assignee: Rolls Royce PLC
•
Filing: 1955-11-21
•
Granted: 1959-09-08
•
Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
- 👤 Everett Anthony Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:53
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)
US1352277A
Cited
US2402418A
Cited
US2488867A
Cited
US2488875A
Cited
US2654566A
Cited
US2749086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |