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William B. MacKenna

VTVapor Technologies: 1 patents #20 of 59Top 35%

Wheeling, IL: #240 of 399 inventorsTop 65%

Illinois: #48,934 of 84,256 inventorsTop 60%

Overall (All Time): #4,008,110 of 4,157,543Top 100%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4491917	Door control systems	Philip M. Higgins, Lawrence G. Sickels, Richard A. Stumpf	1985-01-01