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US84614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved windmill
Assignee: —
•
Filing: —
•
Granted: 1868-12-01
•
Expires: 1885-12-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:21
CPC Classifications
F; F03; F03D; F03D3/00; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/38; F04D29/384; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74; Y10; Y10S; Y10S415/00; Y10S415/905; Y10S415/907
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) | 1871-12-01 | 1872-06-01 | 1872-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-12-01 | 1876-06-01 | 1876-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-12-01 | 1880-06-01 | 1880-12-01 | $7700.00 | Window Closed / Lapsed |