Marc G. Simpson

📍 Los Angeles, CA: #69 of 379 inventorsTop 20%

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

Overall (1989): #78,782 of 140,708Top 60%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4863798	Refractory composite material and method of making such material	David L. Arenz, Edward L. Paquette	1989-09-05