US504462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lock
Assignee: —
•
Filing: —
•
Granted: 1893-09-05
•
Expires: 1910-09-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:10
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0001; E05B47/0002; E05B47/0003; E05B47/0004; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5385; Y10T70/5389; Y10T70/5496; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7441; Y10T70/778; Y10T70/7791; Y10T70/7904
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) | 1896-09-04 | 1897-03-06 | 1897-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-09-05 | 1901-03-07 | 1901-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-09-05 | 1905-03-07 | 1905-09-06 | $7700.00 | Window Closed / Lapsed |