Patent US1655840A successfully refreshed from Google Patents.
US1655840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permutation lock
Assignee: Individual
•
Filing: 1924-12-31
•
Granted: 1928-01-10
•
Expires: 1944-12-31
Abstract
No abstract record available.
Inventors
- 👤 Nichin Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:13
CPC Classifications
E; E05; E05B; E05B37/00; E05B37/02; Y; Y10; Y10S; Y10S292/00; Y10S292/61; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5159; Y10T70/5199; Y10T70/5246; Y10T70/5296; Y10T70/5319; Y10T70/5336; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/55; Y10T70/5531; Y10T70/70; Y10T70/7153; Y10T70/7181; Y10T70/7198; Y10T70/7237; Y10T70/726; Y10T70/7271; Y10T70/7288; Y10T70/7294; Y10T70/735; Y10T70/7367; Y10T70/7373; Y10T70/7424; Y10T70/7429
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1931-01-09 | 1931-07-11 | 1932-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-09 | 1935-07-11 | 1936-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-09 | 1939-07-11 | 1940-01-10 | $7700.00 | Window Closed / Lapsed |