Robert G. Petrushka

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Brecksville, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for slag free casting
- Patent number 5,203,909
- Issue date Apr 20, 1993
- LTV Steel Company, Inc.
- Robert G. Petrushka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Shrouding for top pouring of ingots
- Patent number 5,067,552
- Issue date Nov 26, 1991
- LTV Steel Company, Inc.
- Robert G. Petrushka
- B22 - CASTING POWDER METALLURGY