HZ

Helmut H. Zapfe

AO Ashland Oil: 1 patents #154 of 284Top 55%
📍 Mississauga, CA: #2,015 of 3,799 inventorsTop 55%
Overall (All Time): #4,047,025 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4368222 Vapor permeation curable coatings for surface-porous substrates James R. Blegen, Eugene L. Bulgozdy 1983-01-11