US2931621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supporting plates for turbine blades
Assignee: Individual
•
Filing: 1952-12-15
•
Granted: 1960-04-05
•
Expires: 1972-12-15
Abstract
No abstract record available.
Inventors
- 👤 Anthony J O'donnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:24
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/02; F01D5/06; F01D5/021; F01D5/30
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |