DR

David C. Richie

📍 Detroit, MI: #685 of 1,512 inventorsTop 50%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,922,108 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4809089 Portable video cassette player — 1989-02-28