DG

David Ryan Groen

📍 Guelph, CA: #14 of 50 inventorsTop 30%
Overall (2018): #446,001 of 503,207Top 90%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9993675 Pre-action sprinkler head Randal John Bird 2018-06-12