JS

Joseph P. Seinowski

HA Hasbro: 1 patents #190 of 447Top 45%
Overall (All Time): #3,649,094 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5902116 Electronic learning apparatus with self-adjusting level of difficulty Frederick Rieber, Randolph J. Primozic, Jr. 1999-05-11