Patent US3228456A successfully refreshed from Google Patents.
US49468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in padlocks
Assignee: —
•
Filing: —
•
Granted: 1865-08-15
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Expires: 1882-08-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:14
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/32; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/448; Y10T70/45
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) | 1868-08-14 | 1869-02-13 | 1869-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1872-08-14 | 1873-02-13 | 1873-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1876-08-14 | 1877-02-13 | 1877-08-15 | $7700.00 | Window Closed / Lapsed |