US170590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in rubber springs
Assignee: —
•
Filing: —
•
Granted: 1875-11-30
•
Expires: 1892-11-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/22; F; F16; F16F; F16F1/00; F16F1/36; F16F1/371; Y; Y10; Y10S; Y10S16/00; Y10S16/36
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) | 1878-11-29 | 1879-05-31 | 1879-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1882-11-29 | 1883-05-31 | 1883-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1886-11-29 | 1887-05-31 | 1887-11-30 | $7700.00 | Window Closed / Lapsed |