RD

Roger P. Donwen

📍 Helena, MT: #31 of 89 inventorsTop 35%
🗺 Montana: #1,498 of 3,198 inventorsTop 50%
Overall (All Time): #3,783,099 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5462490 Billiard cue with improved tip configuration — 1995-10-31