RH

Robert R. Heilman

TL The Lockformer: 2 patents #1 of 12Top 9%
II Iowa Precision Industries: 1 patents #2 of 4Top 50%
Overall (All Time): #2,359,307 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4466641 Duct connecting system Howard J. McElroy 1984-08-21
4228672 Rotary notcher and former Leo R. Gale 1980-10-21