Patent US176174A successfully refreshed from Google Patents.
US176174A
Expired / Lapsed
US
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Improvement in coiled springs for cars
Assignee: —
•
Filing: —
•
Granted: 1876-04-18
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Expires: 1893-04-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:35
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/14; B60G11/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T29/49611
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) | 1879-04-18 | 1879-10-18 | 1880-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1883-04-18 | 1883-10-18 | 1884-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1887-04-18 | 1887-10-18 | 1888-04-18 | $7700.00 | Window Closed / Lapsed |