JM

John McMillan

SR Sigma Research: 1 patents #3 of 4Top 75%
Overall (All Time): #4,016,307 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4522064 Ultrasonic method and apparatus for determining the depth of a crack in a solid material 1985-06-11