Harold Smithson

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Westtown, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Cylindrical metal honeycomb catalyst supports, and method for formi...
- Patent number 4,350,617
- Issue date Sep 21, 1982
- William B. Retallick
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Catalyst changing system
- Patent number 3,964,528
- Issue date Jun 22, 1976
- Oxy-Catalyst, Incorporated
- Harold Smithson
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES