US1816575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permutation lock for door latches
Assignee: DUDLEY LOCK Corp
•
Filing: 1928-01-23
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Granted: 1931-07-28
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Expires: 1948-01-23
Abstract
No abstract record available.
Inventors
- 👤 George D Full
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:19
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/08; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496; Y10T70/5611; Y10T70/5757; Y10T70/5765; Y10T70/5805; Y10T70/581; Y10T70/70; Y10T70/7153; Y10T70/735; Y10T70/7367; Y10T70/7384
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) | 1934-07-27 | 1935-01-26 | 1935-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-07-27 | 1939-01-26 | 1939-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-07-27 | 1943-01-26 | 1943-07-28 | $7700.00 | Window Closed / Lapsed |