Douglas D. Colby

DF Delaware Capital Formation: 1 patents #18 of 88Top 25%

📍 Clarkston, MI: #11 of 64 inventorsTop 20%

🗺 Michigan: #1,566 of 6,092 inventorsTop 30%

Overall (2004): #232,776 of 270,089Top 90%

Patents 2004

Issued Patents 2004

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6832539	Cylinder lock	—	2004-12-21