US2158501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tumbler lock
Assignee: Independent Lock Co
•
Filing: 1938-08-03
•
Granted: 1939-05-16
•
Expires: 1958-08-03
Abstract
No abstract record available.
Inventors
- 👤 Fitchburg Louis Gutman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:30
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/0057; E05B27/006; E05B27/0003; E05B27/0017; E05B27/0021; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7605; Y10T70/7667; Y10T70/7689; Y10T70/7701; Y10T70/7915; Y10T70/7932
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) | 1942-05-15 | 1942-11-14 | 1943-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-15 | 1946-11-14 | 1947-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-15 | 1950-11-14 | 1951-05-16 | $7700.00 | Window Closed / Lapsed |