US7671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in removing electricity from wool in the process of manufacture
Assignee: —
•
Filing: —
•
Granted: 1850-09-24
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Expires: 1867-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:26
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02
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) | 1853-09-23 | 1854-03-25 | 1854-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1857-09-23 | 1858-03-25 | 1858-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1861-09-23 | 1862-03-25 | 1862-09-24 | $7700.00 | Window Closed / Lapsed |