US2049875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock system
Assignee: Yale and Towne Manufacturing Co
•
Filing: 1930-01-09
•
Granted: 1936-08-04
•
Expires: 1950-01-09
Abstract
No abstract record available.
Inventors
- 👤 George W Singleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:38
CPC Classifications
E; E05; E05G; E05G5/00; E05G5/006; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5128; Y10T70/5137; Y10T70/5142; Y10T70/70; Y10T70/7006; Y10T70/7028; Y10T70/7051; Y10T70/7062; Y10T70/7153; Y10T70/7424
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) | 1939-08-04 | 1940-02-03 | 1940-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-04 | 1944-02-03 | 1944-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-04 | 1948-02-03 | 1948-08-04 | $7700.00 | Window Closed / Lapsed |