Randall S. Johnson

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Bellwood, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for shaping glass sheets by roll forming
- Patent number 4,139,359
- Issue date Feb 13, 1979
- PPG Industries, Inc.
- Randall S. Johnson
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Shaping and quenching glass sheets by roll forming using transition...
- Patent number 4,123,246
- Issue date Oct 31, 1978
- PPG Industries, Inc.
- Randall S. Johnson
- C03 - GLASS MINERAL OR SLAG WOOL