Gerald E. Duffy

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Portland, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Safety interlock apparatus and method
- Patent number 7,091,670
- Issue date Aug 15, 2006
- InFocus Corporation
- Henry Frazier Pruett
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electric power supply safety interlock system
- Patent number 6,853,152
- Issue date Feb 8, 2005
- InFocus Corporation
- Henry Frazier Pruett
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Projection lamp safety interlock apparatus and method
- Patent number 6,424,097
- Issue date Jul 23, 2002
- InFocus Corporation
- Henry Frazier Pruett
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Source coupler for multimedia projection display system
- Patent number 5,793,352
- Issue date Aug 11, 1998
- In Focus Systems, Inc.
- Robert Y. Greenberg
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Safety interlock apparatus and method
- Publication number 20050041354
- Publication date Feb 24, 2005
- Henry Frazier Pruett
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Electric power supply safety interlock system
- Publication number 20030057849
- Publication date Mar 27, 2003
- Henry Frazier Pruett
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC