WM

William R. Maltman

PP Pilkington Brothers P.L.C.: 1 patents #2 of 8Top 25%
PL Pilkington Group Limited: 1 patents #3 of 19Top 20%
📍 St Helens, GB: #1 of 4 inventorsTop 25%
Overall (1989): #13,059 of 140,708Top 10%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4889413 Manufacture of photochromic articles Mary E. Ormsby 1989-12-26
4851471 Process for manufacturing photochromic articles Ian Michael Threlfall 1989-07-25