US194822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in windmills
Assignee: —
•
Filing: —
•
Granted: 1877-09-04
•
Expires: 1894-09-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:14
CPC Classifications
F; F03; F03D; F03D3/00; A; A61; A61C; A61C1/00; A61C1/02; A61C1/05; F04; F04D; F04D13/00; F04D13/02; F04D13/021; F04D13/024; 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) | 1880-09-03 | 1881-03-05 | 1881-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-09-03 | 1885-03-05 | 1885-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-09-03 | 1889-03-05 | 1889-09-04 | $7700.00 | Window Closed / Lapsed |