IG

Irwin J. Grabel

BM Bally Manufacturing: 2 patents #14 of 85Top 20%
MM Midway Manufacturing: 1 patents #1 of 8Top 15%
WG Williams Electronics Games: 1 patents #35 of 63Top 60%
Overall (All Time): #1,062,285 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4971324 Variable position flipper mechanism for pinball games James A. Patla 1990-11-20
4943061 Multi-position drop target 1990-07-24
D293695 Flipper bat for pinball machines 1988-01-12
4257604 In-line drop targets Glenn R. Andersen 1981-03-24
4243222 Seesaw targets apparatus for pinball game Peter J. Hanchar 1981-01-06