US72344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thomas welch
Assignee: —
•
Filing: —
•
Granted: 1867-12-17
•
Expires: 1884-12-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/02; F16C7/026; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7041; 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) | 1870-12-16 | 1871-06-17 | 1871-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1874-12-16 | 1875-06-17 | 1875-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1878-12-16 | 1879-06-17 | 1879-12-17 | $7700.00 | Window Closed / Lapsed |