Charles L. Stewart

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Palos Verdes Estates, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Billet pre-piercer apparatus and method
- Patent number 5,007,274
- Issue date Apr 16, 1991
- Charles L. Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Indirect extrusion press with ram-mounted turret supporting tooling
- Patent number 4,785,652
- Issue date Nov 22, 1988
- Charles L. Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Indirect extrusion process and machinery therefor
- Patent number 4,781,053
- Issue date Nov 1, 1988
- Charles L. Stewart
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...