US2301751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demountable knob and cylinder lock
Assignee: Schlage Lock Co LLC
•
Filing: 1940-05-29
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Granted: 1942-11-10
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Expires: 1960-05-29
Abstract
No abstract record available.
Inventors
- 👤 Walter R Schlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:20
CPC Classifications
E; E05; E05B; E05B3/00; E05B3/003; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5757; Y10T70/5832
Claims Analysis
Total Claims: 0
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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) | 1945-11-09 | 1946-05-11 | 1946-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-09 | 1950-05-11 | 1950-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-09 | 1954-05-11 | 1954-11-10 | $7700.00 | Window Closed / Lapsed |