Dura-Trac has been issued a number of patents worldwide. Dura-Trac Patents List.
For an overview of how the patents can be used to optimize motor performance over a wider range of conditions, retrofit existing PM motors with Dura-Trac tech, reduce assembly and service cost of PM, and increase ROI, please download 2016q4-duratrac-website-overview
For more information about the patents or clarification of a patent, please contact Mr. Lawrence P. Zepp, Chief Technology Officer, larryzepp2@gmail.com.
Dura-Trac Motors, Inc. 