US2803959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder lock
Assignee: Schlage Lock Co LLC
•
Filing: 1952-11-12
•
Granted: 1957-08-27
•
Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Ernest L Schlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
E; E05; E05B; E05B27/00; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7503; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7605; Y10T70/7638; Y10T70/7667; Y10T70/7706; Y10T70/7915; Y10T70/7932; Y10T70/7938
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US563925A
Cited
US567305A
Cited
US752624A
Cited
US1556242A
Cited
US1789171A
Cited
US2003086A
Cited
GB449029A
Cited
US2629247A
Cited
US2662387A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |