JE

John W. Erwin

MC Mcgard: 1 patents #30 of 46Top 70%
Overall (All Time): #3,905,802 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4936336 Tamperproof construction for hydrant actuating nut Durham S. McCauley, John K. Waite 1990-06-26