Patent US177660A successfully refreshed from Google Patents.
US177660A
Expired / Lapsed
US
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Improvement in boots and shoes
Assignee: —
•
Filing: —
•
Granted: 1876-05-23
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Expires: 1893-05-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:23
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/10; A; A41; A41D; A41D27/00; A41D27/24
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) | 1879-05-23 | 1879-11-22 | 1880-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-05-23 | 1883-11-22 | 1884-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-05-23 | 1887-11-22 | 1888-05-23 | $7700.00 | Window Closed / Lapsed |