Douglas D. Colby

QS Q.E.D. Environmental Systems: 1 patents #3 of 7Top 45%

📍 Clarkston, MI: #23 of 92 inventorsTop 25%

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

Overall (2018): #434,066 of 503,207Top 90%

Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9926759	Removable orifice plate device	—	2018-03-27