Ernest J. Duwell

Person

Hudson, WI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Coated abrasive containing erodible agglomerates
- Patent number 5,578,098
- Issue date Nov 26, 1996
- Minnesota Mining and Manufacturing Company
- John J. Gagliardi
- B24 - GRINDING POLISHING
Information Patent Grant
Coated abrasive containing erodable agglomerates
- Patent number 5,454,750
- Issue date Oct 3, 1995
- Minnesota Mining and Manufacturing Company
- Richard J. Cosmano
- B24 - GRINDING POLISHING
Information Patent Grant
Coated abrasive containing erodable agglomerates
- Patent number 5,078,753
- Issue date Jan 7, 1992
- Minnesota Mining and Manufacturing Company
- David E. Broberg
- B24 - GRINDING POLISHING
Information Patent Grant
Method of making rotary brush with removable brush elements
- Patent number 5,045,091
- Issue date Sep 3, 1991
- Minnesota Mining and Manufacturing Company
- Gerald R. Abrahamson
- A46 - BRUSHWARE
Information Patent Grant
Erodable agglomerates and abrasive products containing the same
- Patent number 4,799,939
- Issue date Jan 24, 1989
- Minnesota Mining and Manufacturing Company
- Ulrich Bloecher
- B24 - GRINDING POLISHING
Information Patent Grant
Cutting element with wear resistant crown
- Patent number 4,705,124
- Issue date Nov 10, 1987
- Minnesota Mining and Manufacturing Company
- Gerald R. Abrahamson
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Erodable agglomerates and abrasive products containing the same
- Patent number 4,652,275
- Issue date Mar 24, 1987
- Minnesota Mining and Manufacturing Company
- Ulrich Bloecher
- B24 - GRINDING POLISHING

Ernest J. Duwell

Person

Patents Grantslast 30 patents

Coated abrasive containing erodible agglomerates

Coated abrasive containing erodable agglomerates

Coated abrasive containing erodable agglomerates

Method of making rotary brush with removable brush elements

Erodable agglomerates and abrasive products containing the same

Cutting element with wear resistant crown

Erodable agglomerates and abrasive products containing the same