Patent US2339749A successfully refreshed from Google Patents.
US2339749A
Expired / Lapsed
US
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Field control for wind driven generators
Assignee: WINCHARGER CORP
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Filing: 1941-12-22
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Granted: 1944-01-25
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Expires: 1961-12-22
Abstract
No abstract record available.
Inventors
- 👤 John R Albers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:52
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/0272; F05; F05B; F05B2220/00; F05B2220/70; F05B2220/706; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y10; Y10S; Y10S416/00; Y10S416/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-01-24 | 1947-07-26 | 1948-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-01-24 | 1951-07-26 | 1952-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-01-24 | 1955-07-26 | 1956-01-25 | $7700.00 | Window Closed / Lapsed |