Patent US374712A successfully refreshed from Google Patents.
US374712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permutation-lock
Assignee: —
•
Filing: —
•
Granted: 1887-12-13
•
Expires: 1904-12-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:08
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/08; Y; Y10; Y10S; Y10S70/00; Y10S70/25; Y10T; Y10T70/00; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7271; Y10T70/7288; Y10T70/80; Y10T70/8297; Y10T70/8351
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) | 1890-12-12 | 1891-06-13 | 1891-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1894-12-12 | 1895-06-13 | 1895-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1898-12-12 | 1899-06-13 | 1899-12-13 | $7700.00 | Window Closed / Lapsed |