US712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mode of
Assignee: —
•
Filing: —
•
Granted: 1838-04-25
•
Expires: 1855-04-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:20
CPC Classifications
F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
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) | 1841-04-24 | 1841-10-24 | 1842-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1845-04-24 | 1845-10-24 | 1846-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1849-04-24 | 1849-10-24 | 1850-04-25 | $7700.00 | Window Closed / Lapsed |