DJ

Douglas Marshall Johnson

📍 Souderton, PA: #74 of 141 inventorsTop 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #2,844,662 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10217449 Percussive beater with transducer Andrew Gearhart 2019-02-26