Harry Chan

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Richmond Hill, CA

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Patents Grantslast 30 patents

Information Patent Grant
Pipe extrusion die for multi-layer pipe
- Patent number 6,787,092
- Issue date Sep 7, 2004
- Harry Chan
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Pipe extrusion die for multi-layer pipe
- Publication number 20020168437
- Publication date Nov 14, 2002
- Harry Chan
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL