Leonard E. Guest

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Binbrook, CA

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Patents Grantslast 30 patents

Information Patent Grant
Electrolytic etching of metals to reveal internal quality
- Patent number 5,227,033
- Issue date Jul 13, 1993
- Stelco Inc.
- John H. Kelly
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method and apparatus for electrolytic etching of metals
- Patent number 5,186,796
- Issue date Feb 16, 1993
- Stelco Inc.
- John H. Kelly
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Electrolytic etching of metals to reveal internal quality
- Patent number 5,061,352
- Issue date Oct 29, 1991
- Stelco Inc.
- John H. Kelly
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method for automatically fluxing and casting samples
- Patent number 4,612,042
- Issue date Sep 16, 1986
- Stelco Inc.
- John H. Kelly
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for automatically fluxing and casting samples
- Patent number 4,563,146
- Issue date Jan 7, 1986
- Stelco Inc.
- John H. Kelly
- B22 - CASTING POWDER METALLURGY