Marvin D. Richards

📍 Pleasanton, CA: #12 of 62 inventorsTop 20%

🗺 California: #2,144 of 10,592 inventorsTop 25%

Overall (1989): #79,209 of 140,708Top 60%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4820230	Tossing ring and saucer	—	1989-04-11