DP

David Pierson

SS Sig Sauer: 1 patents #9 of 33Top 30%
📍 Tualatin, OR: #8 of 21 inventorsTop 40%
🗺 Oregon: #1,421 of 3,620 inventorsTop 40%
Overall (2025): #409,874 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12366424 Firearm sight having lifetime round counter Andrew W. York, Donald L. Cramer, Richard Bradley Brumfield, John P. Nichols, Christopher James Boudreau 2025-07-22