BE

Billy Ervin

PE Perma-Pipe: 1 patents #4 of 8Top 50%
Overall (All Time): #3,307,841 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7824595 Method and system for cast molding a fluid conduit Robert Appleby, Glen Pfanner 2010-11-02