US181925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in lock and chain-fastening combined
Assignee: —
•
Filing: —
•
Granted: 1876-09-05
•
Expires: 1893-09-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:35
CPC Classifications
E; E05; E05C; E05C17/00; E05C17/02; E05C17/04; E05C17/36; E05C17/365; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5164
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) | 1879-09-05 | 1880-03-06 | 1880-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-09-05 | 1884-03-06 | 1884-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-09-05 | 1888-03-06 | 1888-09-05 | $7700.00 | Window Closed / Lapsed |