HH

Harold O. Hewitt

📍 Calgary, CA: #1,801 of 5,407 inventorsTop 35%
Overall (All Time): #2,271,952 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5651202 Expandable display device and sports card holder 1997-07-29
5477631 Expandable display device and sports card holder 1995-12-26