Nicholas G. Walker

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West Chester, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for treating a liquid with a gas using an impeller
- Patent number 5,314,525
- Issue date May 24, 1994
- Charles E. Eckert
- C21 - METALLURGY OF IRON
Information Patent Grant
Impeller for treating molten metals
- Patent number 5,160,693
- Issue date Nov 3, 1992
- Charles E. Eckert
- C21 - METALLURGY OF IRON