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Arie A. Demmers

KN Koninklijke Bos Kalis Westminster Group N.V.: 2 patents #1 of 4Top 25%
📍 Alblasserdam, NL: #6 of 14 inventorsTop 45%
Overall (All Time): #2,370,169 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4261275 Hopper barge 1981-04-14
4237688 Hydraulic synchronous driving mechanism 1980-12-09