DJ

Douglas Johnson

📍 Prospect Park, PA: #2 of 4 inventorsTop 50%
🗺 Pennsylvania: #2,197 of 7,031 inventorsTop 35%
Overall (2016): #415,393 of 481,213Top 90%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9393847 Modular and morphable air vehicle John W. Piasecki, Frederick W. Piasecki, Brian Geiger, David Pitcairn 2016-07-19