WM

William B. MacKenna

VT Vapor Technologies: 1 patents #20 of 59Top 35%
Overall (All Time): #4,008,110 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4491917 Door control systems Philip M. Higgins, Lawrence G. Sickels, Richard A. Stumpf 1985-01-01