Patent US3481723A successfully refreshed from Google Patents.
US3481723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive grinding wheel
Assignee: STERLING ABRASIVE PRODUCTS Co A CORP OF
•
Filing: 1965-03-02
•
Granted: 1969-12-02
•
Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Samuel S Kistler
- 👤 Charles V Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:27
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1409; C09K3/1418
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US90824A
Cited
US2347537A
Cited
US2877103A
Cited
US2978850A
Cited
US2947124A
Cited
US3079243A
Cited
US3183071A
Cited
US3387957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |