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US114381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in wind-wheels
Assignee: —
•
Filing: —
•
Granted: 1871-05-02
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Expires: 1888-05-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:39
CPC Classifications
F; F03; F03D; F03D7/00; F03D7/02; F03D7/022; F03D7/0224; F03D80/00; F05; F05B; F05B2260/00; F05B2260/70; F05B2260/74; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/211; Y10T74/2142
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) | 1874-05-01 | 1874-10-31 | 1875-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1878-05-01 | 1878-10-31 | 1879-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1882-05-01 | 1882-10-31 | 1883-05-02 | $7700.00 | Window Closed / Lapsed |