FK

Frederick W. Kruppert

📍 Chapleau, CA: #3 of 6 inventorsTop 50%
Overall (All Time): #1,677,428 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4575054 Apparatus for quenching steel pipes 1986-03-11
4504042 Apparatus for heat treating steel 1985-03-12
4490187 Method for heat treating steel 1984-12-25