William B. Dawson

KS Keystone Retaining Wall Systems: 2 patents #1 of 3Top 35%

📍 Maple Grove, MN: #5 of 45 inventorsTop 15%

🗺 Minnesota: #307 of 3,156 inventorsTop 10%

Overall (1997): #20,169 of 185,788Top 15%

Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D387434	Front face of a plantable retaining wall block	—	1997-12-09
5601384	Plantable retaining wall	—	1997-02-11