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Gerrit H. Van der Klashorst
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Pretoria, ZA
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last 30 patents
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Patent Grant
Lignin derivative polymers
Patent number
4,769,434
Issue date
Sep 6, 1988
South African Inventions Development Corporation
Gerrit H. Van der Klashorst
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...