JC

John W. Chisholm

PI Protechnics International: 2 patents #2 of 14Top 15%
Overall (All Time): #1,613,045 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6652035 Highwall mining system 2003-11-25
5608214 Gamma ray spectral tool for well logging Emilio Baron, David Berneking, Marc Fisher, William Trainor, James R. Foreman 1997-03-04
5049743 Surface located isotope tracer injection apparatus Lawrence August Taylor, Philip T. Thayer 1991-09-17