US192901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improvement in screw-drivers
Assignee: —
•
Filing: —
•
Granted: 1877-07-10
•
Expires: 1894-07-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:35
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/02; B25B23/08; B25B23/10; B25B23/101
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) | 1880-07-09 | 1881-01-08 | 1881-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1884-07-09 | 1885-01-08 | 1885-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1888-07-09 | 1889-01-08 | 1889-07-10 | $7700.00 | Window Closed / Lapsed |