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US45530A
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Improvement in wind-wheels
Assignee: —
•
Filing: —
•
Granted: 1864-12-20
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Expires: 1881-12-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
F; F03; F03D; F03D9/00; F03D9/10; F03D9/13; F01; F01B; F01B17/00; F01B17/02; F03D15/00; F03D15/10; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E60/00; Y02E60/16; Y02E70/00; Y02E70/30
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) | 1867-12-20 | 1868-06-20 | 1868-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1871-12-20 | 1872-06-20 | 1872-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1875-12-20 | 1876-06-20 | 1876-12-20 | $7700.00 | Window Closed / Lapsed |