RJ

Robert K. Johnson

RO Rollerblade: 2 patents #1 of 10Top 10%
📍 Blaine, MN: #2 of 22 inventorsTop 10%
🗺 Minnesota: #240 of 2,841 inventorsTop 9%
Overall (1994): #21,362 of 165,921Top 15%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5331752 Skate with detachable shoe Brennan J. Olson, Michel D. Arney, Jack Curley 1994-07-26
D344119 Roller skate frame Michael D. Arney 1994-02-08