OR

O. Bertrand Ramsay

📍 Ypsilanti, MI: #470 of 1,007 inventorsTop 50%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,268,191 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5604859 Display of partial periodic table arrays — 1997-02-18
5265029 Chemical calculator — 1993-11-23