Patent US2528193A successfully refreshed from Google Patents.
US2528193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic disk blade grinder
Assignee: Individual
•
Filing: 1946-11-15
•
Granted: 1950-10-31
•
Expires: 1966-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles R Van Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:58
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/46; B24B3/466
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US385666A
Cited
US414565A
Cited
US452004A
Cited
US565644A
Cited
US575057A
Cited
US681440A
Cited
US723051A
Cited
US799700A
Cited
US1003631A
Cited
US1405454A
Cited
US1436166A
Cited
US1804347A
Cited
US1967447A
Cited
US1998783A
Cited
US2213756A
Cited
US2202587A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |