US2985426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bladed rotor construction for axialflow fluid machine
Assignee: Rolls Royce PLC
•
Filing: 1955-07-11
•
Granted: 1961-05-23
•
Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Hunter Philip Edgar
- 👤 Davison Geoffrey Greyston
- 👤 Wilkinson Wilfred Henry
- 👤 Williamson Douglas Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/30; F01D5/3007; F01D5/3015
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |