Stephen A. Boettcher

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Deerfield, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Abrasive slurry regulator assembly
- Patent number 4,047,639
- Issue date Sep 13, 1977
- Speedfam Corporation
- David M. McNamara
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive slurry regulator assembly
- Patent number 4,047,640
- Issue date Sep 13, 1977
- Speedfam Corporation
- David M. McNamara
- B24 - GRINDING POLISHING
Information Patent Grant
Abrasive slurry regulator assembly
- Patent number 3,991,918
- Issue date Nov 16, 1976
- Speedfam Corporation
- David M. McNamara
- B24 - GRINDING POLISHING