Patent US43316A successfully refreshed from Google Patents.
US43316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in car-springs
Assignee: —
•
Filing: —
•
Granted: 1864-06-28
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Expires: 1881-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:15
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0418; Y; Y10; Y10S; Y10S128/00; Y10S128/92
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) | 1867-06-28 | 1867-12-28 | 1868-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1871-06-28 | 1871-12-28 | 1872-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1875-06-28 | 1875-12-28 | 1876-06-28 | $7700.00 | Window Closed / Lapsed |