David M. Ouwinga

📍 Grant, MI: #5 of 17 inventorsTop 30%

🗺 Michigan: #35,034 of 86,293 inventorsTop 45%

Overall (All Time): #2,144,895 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7351007	Waterfall spillway	—	2008-04-01
6709580	Pond skimmer	—	2004-03-23