Patent US4086790A successfully refreshed from Google Patents.
Patent US3428774A successfully refreshed from Google Patents.
Patent US4443532A successfully refreshed from Google Patents.
Patent US905638A successfully refreshed from Google Patents.
US905638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Knife-sharpener.
Assignee: Individual
•
Filing: 1908-02-11
•
Granted: 1908-12-01
•
Expires: 1928-02-11
Abstract
No abstract record available.
Inventors
- 👤 Anton Von Beust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:48
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/06; B24D15/08
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) | 1911-12-01 | 1912-06-01 | 1912-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-12-01 | 1916-06-01 | 1916-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-12-01 | 1920-06-01 | 1920-12-01 | $7700.00 | Window Closed / Lapsed |