David S. Kerr

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Wheaton, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Refractory insulating veneer
- Patent number 4,307,197
- Issue date Dec 22, 1981
- Nalco Chemical Company
- John G. Daniel
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
System for handling and applying a non-suspended refractory slurry
- Patent number 3,949,937
- Issue date Apr 13, 1976
- Nalco Chemical Company
- Edwin T. Sortwell
- B22 - CASTING POWDER METALLURGY