David W. Johnsen

AO American Optical: 1 patents #1 of 12Top 9%

📍 Denver, CO: #11 of 78 inventorsTop 15%

🗺 Colorado: #133 of 721 inventorsTop 20%

Overall (1982): #70,555 of 81,411Top 90%

Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D263058	Pair of spectacles	—	1982-02-16