DS

David J. Spiegler

📍 Chicago, IL: #251 of 1,478 inventorsTop 20%
🗺 Illinois: #1,398 of 8,424 inventorsTop 20%
Overall (2017): #158,895 of 506,227Top 35%
2
Patents 2017

Issued Patents 2017

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D794730 Panel for training ball 2017-08-15
D779004 Training ball 2017-02-14