William Charles Leonhardt

OA Oldcastle Architectural: 3 patents #4 of 14Top 30%

📍 Channahon, IL: #26 of 78 inventorsTop 35%

🗺 Illinois: #26,653 of 84,256 inventorsTop 35%

Overall (All Time): #1,552,328 of 4,157,543Top 40%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
D659263	Building unit	Gregory Allen Jacot	2012-05-08
D633630	Building unit	Gregory Allen Jacot	2011-03-01
D615216	Building unit	Gregory Allen Jacot	2010-05-04