CM

Charles K. McGregor

📍 Ann Arbor, MI: #3,831 of 6,071 inventorsTop 65%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,017,176 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4525601 Telephone call accounting system Richard G. Barnich, Michael Ferguson 1985-06-25