Bill Wei Shiu Chien

Follow

Person

Waterloo, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Between-rails roadway for road-rail crossings
- Patent number 6,877,671
- Issue date Apr 12, 2005
- Performance Polymers Inc.
- Dominicus Bruyn
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES