WZ

William J. Zehr

TP The Protectoseal: 2 patents #4 of 11Top 40%
📍 Des Plaines, IL: #360 of 807 inventorsTop 45%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,272,612 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5660204 Tank blanketing valve Thomas C. Piotrowski, Scott R. Diaz 1997-08-26
4182384 Fire extinguisher discharge station — 1980-01-08