PH

Pentti K. Helpio

RO Rauma-Repola Oy: 1 patents #10 of 40Top 25%
📍 Uusikaupunki, FI: #6 of 12 inventorsTop 50%
Overall (All Time): #3,981,899 of 4,157,543Top 100%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4693202 Freeze resistant bottom well — 1987-09-15