FR

Franciscus Roffelsen

SB Spiro Research B.V.: 1 patents #1 of 1Top 100%
📍 Helmond, NL: #2 of 21 inventorsTop 10%
Overall (2005): #56,370 of 245,428Top 25%
2
Patents 2005

Issued Patents 2005

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6968863 Non-return valve — 2005-11-29
6926069 Method for manufacturing a double-walled heat exchanging tube with leak detection — 2005-08-09