US461751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isaac st
Assignee: —
•
Filing: —
•
Granted: 1891-10-20
•
Expires: 1908-10-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/08; F16L27/0849
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1894-10-19 | 1895-04-20 | 1895-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1898-10-19 | 1899-04-20 | 1899-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1902-10-20 | 1903-04-21 | 1903-10-21 | $7700.00 | Window Closed / Lapsed |