US131660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in churns
Assignee: —
•
Filing: —
•
Granted: 1872-09-24
•
Expires: 1889-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:38
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/72; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18416; Y10T74/18456
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) | 1875-09-24 | 1876-03-25 | 1876-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1879-09-24 | 1880-03-25 | 1880-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1883-09-24 | 1884-03-25 | 1884-09-24 | $7700.00 | Window Closed / Lapsed |