WJ

Walter A. Johnston

📍 Timonium, MD: #267 of 440 inventorsTop 65%
🗺 Maryland: #19,431 of 35,612 inventorsTop 55%
Overall (All Time): #4,105,442 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4186429 Flashing light safety device for cyclists helmets — 1980-01-29