DS

Donald Siefkes

📍 Troy, MI: #28 of 134 inventorsTop 25%
🗺 Michigan: #973 of 4,313 inventorsTop 25%
Overall (1994): #140,535 of 165,921Top 85%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5335639 Heat exchanger having close packed spheres — 1994-08-09