Donald Wayne Dingfelder

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Winona, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for tool-less removal of PCB assembly
- Patent number 7,382,626
- Issue date Jun 3, 2008
- International Business Machines Corporation
- Donald Wayne Dingfelder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for tool-less removal of PCB assembly
- Patent number 7,307,856
- Issue date Dec 11, 2007
- International Business Machines Corporation
- Donald Wayne Dingfelder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Retention bracket/collar for circuit cards
- Patent number 6,517,369
- Issue date Feb 11, 2003
- International Business Machines Corporation
- Matthew Allen Butterbaugh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cooling apparatus for electronic chips
- Patent number 5,630,469
- Issue date May 20, 1997
- International Business Machines Corporation
- Matthew A. Butterbaugh
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
APPARATUS FOR TOOL-LESS REMOVAL OF PCB ASSEMBLY
- Publication number 20070291455
- Publication date Dec 20, 2007
- International Business Machines Corporation
- Donald Wayne Dingfelder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Apparatus for tool-less removal of PCB assembly
- Publication number 20070163108
- Publication date Jul 19, 2007
- International Business Machines Corporation
- Donald Wayne Dingfelder
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR