John J. DuPlessis

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Elizabethtown, KY, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and assembly for producing extruded permanent magnet articles
- Patent number 5,047,205
- Issue date Sep 10, 1991
- Crucible Materials Corporation
- Vijay K. Chandhok
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method for producing dies for use in compacting permanent magnet al...
- Patent number 4,971,756
- Issue date Nov 20, 1990
- Crucible Materials Corporation
- John J. DuPlessis
- B22 - CASTING POWDER METALLURGY