RI

Rodney C. Irwin

KO Koppers: 3 patents #12 of 126Top 10%
Overall (All Time): #1,682,768 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4417952 Apparatus for cleaning coke oven doors 1983-11-29
4372819 Aligning device 1983-02-08
4336107 Aligning device 1982-06-22