David Rich

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Dedham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Sandwich structure and method of making same
- Patent number 6,291,049
- Issue date Sep 18, 2001
- Aztex, Inc.
- Edward Kunkel
- B32 - LAYERED PRODUCTS
Information Patent Grant
Method of manufacturing a perforated laminate
- Patent number 6,190,602
- Issue date Feb 20, 2001
- Aztex, Inc.
- Eric Blaney
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL