Arnold A. Koistinen

📍 Watertown, SD: #19 of 83 inventorsTop 25%

🗺 South Dakota: #678 of 2,308 inventorsTop 30%

Overall (All Time): #2,362,082 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4418496	Support structure for small floral arrangement	—	1983-12-06
4381623	Add-water funnel and card holder	—	1983-05-03