DH

Donald W. Harnack

General Motors: 3 patents #4,693 of 18,328Top 30%
📍 Dearborn, MI: #486 of 1,494 inventorsTop 35%
🗺 Michigan: #27,158 of 86,293 inventorsTop 35%
Overall (All Time): #1,564,847 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8056538 Method and system to prevent unauthorized uses of engine controllers Anthony E. Cubr, Sandip P Dholakia, Steven Felix, Aaron T Allison 2011-11-15
6755078 Methods and apparatus for estimating the temperature of an exhaust gas recirculation valve coil Claudio A. Hernandez, Daniel G. Brennan, Gregory J. York 2004-06-29
5213178 Traction control system with fuel and spark control Jeffrey M. Polidan 1993-05-25