Patent US1179168A successfully refreshed from Google Patents.
Patent US1210867A successfully refreshed from Google Patents.
US213252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in locks
Assignee: —
•
Filing: —
•
Granted: 1879-03-11
•
Expires: 1896-03-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:37
CPC Classifications
E; E05; E05B; E05B9/00; E05B9/08; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5097; Y10T70/5111; Y10T70/5128; Y10T70/5133; Y10T70/80; Y10T70/8432; Y10T70/8459; Y10T70/8541
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) | 1882-03-10 | 1882-09-09 | 1883-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-03-10 | 1886-09-09 | 1887-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-03-10 | 1890-09-09 | 1891-03-11 | $7700.00 | Window Closed / Lapsed |