DS

Douglas B. Spear

📍 Clarkston, MI: #291 of 750 inventorsTop 40%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,008,501 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9366030 Wall panel system — 2016-06-14
8997436 Wall panel system — 2015-04-07