US81778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dexter d
Assignee: —
•
Filing: —
•
Granted: 1868-09-01
•
Expires: 1885-09-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3441; F04C2/3443
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) | 1871-09-01 | 1872-03-02 | 1872-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-09-01 | 1876-03-02 | 1876-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-09-01 | 1880-03-02 | 1880-09-01 | $7700.00 | Window Closed / Lapsed |