Patent US3680000A successfully refreshed from Google Patents.
US76526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
John robertson
Assignee: —
•
Filing: —
•
Granted: 1868-04-07
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Expires: 1885-04-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/14; F16B7/1427; F16B2200/00; F16B2200/10; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T74/00; Y10T74/21; Y10T74/2142
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) | 1871-04-07 | 1871-10-07 | 1872-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-04-07 | 1875-10-07 | 1876-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-04-07 | 1879-10-07 | 1880-04-07 | $7700.00 | Window Closed / Lapsed |