GE

Gosta Harald Eriksson

IA Internationella Siporex Ab: 1 patents #3 of 6Top 50%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4197077 Apparatus for use in manufacturing of cellular lightweight concrete slabs Oystein Kalvenes, Percy Svensson, Rolf E. Goransson 1980-04-08