DP

David Perkins

AP Active Power: 2 patents #1 of 10Top 10%
🗺 Texas: #1,114 of 8,709 inventorsTop 15%
Overall (2003): #70,779 of 273,478Top 30%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6657320 Integrated flywheel uninterruptible power supply system James A. Andrews, David A. Badger, Robert L. Fuller, Jr., Randal A. Lee, James R. Pitt +1 more 2003-12-02
6642682 Circuits and methods for preheating a rotor of a motor-generator device Charles S. Richey 2003-11-04