JL

James P. Leffingwell

Overall (All Time): #3,975,400 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4669242 Apparatus for lining furnace walls Steven Louis Johnson, Martin E. Adams, John J. Musser, William H. Hedges, Thomas L. Robberts 1987-06-02