Mark D. Johnson

📍 Sioux Falls, SD: #19 of 70 inventorsTop 30%

🗺 South Dakota: #50 of 233 inventorsTop 25%

Overall (2018): #319,376 of 503,207Top 65%

Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9988186	Tool storage device	—	2018-06-05