HJ

Howard Percival Johnson, Jr.

📍 Upper Marlboro, MD: #34 of 154 inventorsTop 25%
🗺 Maryland: #13,387 of 35,612 inventorsTop 40%
Overall (All Time): #2,195,317 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D496888 Anti-rattle cover for a trailer ball — 2004-10-05
6382656 Anti-rattle device for a trailer hitch — 2002-05-07