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US100402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in padlocks
Assignee: —
•
Filing: —
•
Granted: 1870-03-01
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Expires: 1887-03-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:50
CPC Classifications
G; G11; G11C; G11C29/00; G11C29/70; G11C29/86; 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) | 1873-02-28 | 1873-08-30 | 1874-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1877-02-28 | 1877-08-30 | 1878-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1881-02-28 | 1881-08-30 | 1882-03-01 | $7700.00 | Window Closed / Lapsed |