BB

Brian R. Ballantyne

📍 Toronto, CA: #38 of 155 inventorsTop 25%
Overall (1989): #137,274 of 140,708Top 100%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4852320 Mortar collecting device for use in masonry wall construction 1989-08-01