John R. Hallman, Jr.

📍 Columbia, MD: #858 of 1,501 inventorsTop 60%

🗺 Maryland: #19,431 of 35,612 inventorsTop 55%

Overall (All Time): #3,862,319 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5159549	Multiple player game data processing system with wager accounting	Richard A. Schrenker	1992-10-27