RA

Ralph E. Allison

BM Bmi: 2 patents #1 of 15Top 7%
Overall (All Time): #2,370,783 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4272020 Gunning apparatus for in situ spraying of refractory material — 1981-06-09
4211367 Gunning apparatus for in situ spraying of refractory material — 1980-07-08