US2547636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windmill electric generating and storage system, including controlling means
Assignee: Individual
•
Filing: 1946-12-11
•
Granted: 1951-04-03
•
Expires: 1966-12-11
Abstract
No abstract record available.
Inventors
- 👤 Fumagalli Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:55
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/0276; F03D9/00; F03D9/10; F03D9/11; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E70/00; Y02E70/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1114759A
Cited
US1125783A
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US1165418A
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US1131434A
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US1362753A
Cited
US2159886A
Cited
US2179885A
Cited
US2360792A
Cited
US2363850A
Cited
US2470797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |