Keith Erwin Boonstra

📍 Holland, MI: #53 of 138 inventorsTop 40%

🗺 Michigan: #3,395 of 9,817 inventorsTop 35%

Overall (2018): #347,146 of 503,207Top 70%

Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9885487	Humidifier utilizing filtered water	—	2018-02-06