WF

William I. Frey

PI Ppg Industries: 2 patents #457 of 1,216Top 40%
Overall (All Time): #2,370,936 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4277299 Release molds for laminating bilayer safety glass Joseph Cherenko, Joseph D. Kelly, Larry S. Sokol 1981-07-07
4274856 Method for developing a release surface on a glass mold William R. Beestrice 1981-06-23