Brian Hargreaves

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Sarnia, CA

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Patents Grantslast 30 patents

Information Patent Grant
Process for extruding stabilized expanded polystyrene composition
- Patent number 4,136,142
- Issue date Jan 23, 1979
- Polysar Limited
- Brian Hargreaves
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...