RA

Robert Appleby

PE Perma-Pipe: 1 patents #4 of 8Top 50%
Overall (All Time): #2,128,556 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7824595 Method and system for cast molding a fluid conduit Glen Pfanner, Billy Ervin 2010-11-02
4399832 Air gap assembly 1983-08-23