KH

Knut Helmersson

Overall (1982): #78,359 of 81,411Top 100%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4329178 Method in the manufacture of steam-cured light-weight aerated concrete with hydrophobic properties Oystein Kalvenes, Carl-Henry Krill, Percy Svensson 1982-05-11