Patent US3170948A successfully refreshed from Google Patents.
US1132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
John wetherell
Assignee: —
•
Filing: —
•
Granted: 1839-04-20
•
Expires: 1856-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:22
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/12; Y; Y10; Y10S; Y10S425/00; Y10S425/803
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1842-04-19 | 1842-10-19 | 1843-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1846-04-19 | 1846-10-19 | 1847-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1850-04-19 | 1850-10-19 | 1851-04-20 | $7700.00 | Window Closed / Lapsed |