William J. Kooistra, Sr.

📍 Kalamazoo, MI: #818 of 1,283 inventorsTop 65%

🗺 Michigan: #49,615 of 86,293 inventorsTop 60%

Overall (All Time): #4,100,874 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4301613	Marble actuated toy	—	1981-11-24