CD

Carl O. DeWald

PT Precision Welding Technologies: 1 patents #5 of 6Top 85%
Overall (All Time): #2,348,878 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4598895 Plug valve with hydraulically actuated seals Jack H. Pollock 1986-07-08
4497467 Plug valve with hydraulically actuated seals Jack H. Pollock 1985-02-05