Dennis M. Callen

📍 Fenton, MI: #247 of 454 inventorsTop 55%

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

Overall (All Time): #3,229,759 of 4,157,543Top 80%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
8307640	Apparatus for generating power	—	2012-11-13