US37642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in bridges
Assignee: —
•
Filing: —
•
Granted: 1863-02-10
•
Expires: 1880-02-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:04
CPC Classifications
E; E01; E01D; E01D1/00; E01D1/005
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) | 1866-02-09 | 1866-08-11 | 1867-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1870-02-09 | 1870-08-11 | 1871-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1874-02-09 | 1874-08-11 | 1875-02-10 | $7700.00 | Window Closed / Lapsed |