MP

Michael Parham

SG Sigma Game: 1 patents #8 of 15Top 55%
Overall (All Time): #1,653,462 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D344296 Slant-top gaming machine Linn Anthony McKay, Frank C. DeSimone 1994-02-15
5066261 Coin hopper assembly 1991-11-19
D292423 Game machine door David E. Williams, Loren English 1987-10-20