US219894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in wind-motors
Assignee: —
•
Filing: —
•
Granted: 1879-09-23
•
Expires: 1896-09-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:40
CPC Classifications
F; F03; F03D; F03D3/00; F03D3/04; F03D3/0436; F03D3/0445; F03D9/00; F03D9/20; F03D9/28; F04; F04D; F04D13/00; F04D13/02; F04D13/04; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/74
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) | 1882-09-22 | 1883-03-24 | 1883-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-09-22 | 1887-03-24 | 1887-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-09-22 | 1891-03-24 | 1891-09-23 | $7700.00 | Window Closed / Lapsed |