Patent US2805522A successfully refreshed from Google Patents.
US2805522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sharpening wood bits
Assignee: Individual
•
Filing: 1954-11-15
•
Granted: 1957-09-10
•
Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore S Dayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/24; B24B3/33
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US209782A
Cited
US302527A
Cited
US303239A
Cited
US313456A
Cited
GB202134A
Cited
US2147227A
Cited
US2124093A
Cited
US2275483A
Cited
US2328549A
Cited
US2494825A
Cited
US2491346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |