Jack Williams

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Railroad crossing system
- Patent number 5,538,182
- Issue date Jul 23, 1996
- Omni Products, Inc.
- R. Andrew Davis
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Concrete grade crossing panels having integral elastomeric seals
- Patent number 5,535,948
- Issue date Jul 16, 1996
- Omni Products, Inc.
- Jack Williams
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES