Duwell; Ernest J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duwell; Ernest J..The latest application filed is for "coated abrasive containing erodable agglomerates".
- Duwell; Ernest J. - St. Paul MN
- Duwell; Ernest J. - Hudson WI
| Patent | Date |
|---|---|
| Coated abrasive containing erodable agglomerates Grant 5,454,750 - Cosmano , et al. October 3, 1 | 1995-10-03 |
| Coated abrasive containing erodable agglomerates Grant 5,078,753 - Broberg , et al. January 7, 1 | 1992-01-07 |
| Method of making rotary brush with removable brush elements Grant 5,045,091 - Abrahamson , et al. September 3, 1 | 1991-09-03 |
| Erodable agglomerates and abrasive products containing the same Grant 4,799,939 - Bloecher , et al. January 24, 1 | 1989-01-24 |
| Cutting element with wear resistant crown Grant 4,705,124 - Abrahamson , et al. November 10, 1 | 1987-11-10 |
| Erodable agglomerates and abrasive products containing the same Grant 4,652,275 - Bloecher , et al. March 24, 1 | 1987-03-24 |
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