Karl D. Duex

AM A. Y. Mcdonald Mfg.: 1 patents #12 of 17Top 75%

📍 Potosi, WI: #3 of 6 inventorsTop 50%

🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%

Overall (All Time): #3,379,641 of 4,157,543Top 85%

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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
7185671	Angled dual check valve	—	2007-03-06