Frank A. Grunfeld

📍 Evanston, IL: #730 of 1,719 inventorsTop 45%

🗺 Illinois: #34,584 of 84,256 inventorsTop 45%

Overall (All Time): #2,317,881 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5033404	Barrier mechanism for isolating drive chain from active chamber in Langmuir trough	—	1991-07-23
4646678	Thin film deposition	—	1987-03-03