DD

Donald W. Dingfelder

IBM: 6 patents #16,453 of 70,183Top 25%
Overall (All Time): #870,124 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7515410 Hard disk drive carrier converter apparatus Matthew Kueper, David G. Lund, Christopher L. Tuma 2009-04-07
7382626 Apparatus for tool-less removal of PCB assembly James D. Gerken, Scott R. LaPree, Gregory Todd Smith 2008-06-03
7307856 Apparatus for tool-less removal of PCB assembly James D. Gerken, Scott R. LaPree, Gregory Todd Smith 2007-12-11
6517369 Retention bracket/collar for circuit cards Matthew A. Butterbaugh, Yasuharu Yamada 2003-02-11
5947570 Modular cabinet assembly for a computer Neil Anderson, Mark L. Kyllo, John L. Colbert, Rodney G. Ratajczyk 1999-09-07
5630469 Cooling apparatus for electronic chips Matthew A. Butterbaugh, Peter M. Herman, Sukhvinder S. Kang 1997-05-20