Patent US889830A successfully refreshed from Google Patents.
US889830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding device for sharpening the rotary circular knives of meat-slicing machines and the like.
Assignee: Individual
•
Filing: 1905-07-27
•
Granted: 1908-06-02
•
Expires: 1925-07-27
Abstract
No abstract record available.
Inventors
- 👤 Wilhelmus Adrianus Van Berkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:46
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/08; B26D7/12; Y; Y10; Y10T; Y10T83/00; Y10T83/303; Y10T83/313
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) | 1911-06-02 | 1911-12-02 | 1912-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-06-02 | 1915-12-02 | 1916-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-06-02 | 1919-12-02 | 1920-06-02 | $7700.00 | Window Closed / Lapsed |