US2812823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind driven power plant with air guiding elements
Assignee: Individual
•
Filing: 1952-06-21
•
Granted: 1957-11-12
•
Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 Oviedo Fortunato Fernandez De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:49
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/04; F03D3/0409; F03D15/00; F03D15/10; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |