RM

Robert A. MacDonald

KS Keystone Retaining Wall Systems: 4 patents #2 of 6Top 35%
📍 Plymouth, MN: #25 of 271 inventorsTop 10%
🗺 Minnesota: #536 of 7,575 inventorsTop 8%
Overall (2020): #45,795 of 565,922Top 9%
4
Patents 2020

Issued Patents 2020

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
10760224 Twisted block Thomas S. Riccobene 2020-09-01
10760242 Blocks, block systems and methods of making blocks Thomas S. Riccobene 2020-09-01
10760281 Veneer connectors, wall blocks, veneer panels for wall blocks, and walls Robert John Lundell 2020-09-01
10655340 Patio blocks and block systems with side surface positioning and retaining structures Robert John Lundell 2020-05-19