US143309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement
Assignee: —
•
Filing: —
•
Granted: 1873-09-30
•
Expires: 1890-09-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
F; F24; F24F; F24F7/00; F24F7/04
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) | 1876-09-29 | 1877-03-31 | 1877-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1880-09-29 | 1881-03-31 | 1881-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1884-09-29 | 1885-03-31 | 1885-09-30 | $7700.00 | Window Closed / Lapsed |