Gerald E. Duffy — 10 Patents at GE

Gerald E. Duffy has been granted 10 US patents while listed as an inventor at GE. The first was granted in 1992 and the most recent in August 2006. Gerald E. Duffy ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Gerald E. Duffy in Mentor, OH, US.

Patents per Year

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Showing 1–10 of 10 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7091670	Safety interlock apparatus and method	Henry Frazier Pruett	2006-08-15	$573,000
6853152	Electric power supply safety interlock system	Henry Frazier Pruett	2005-02-08	$3,435,000
6424097	Projection lamp safety interlock apparatus and method	Henry Frazier Pruett	2002-07-23	$6,024,000
5793352	Source coupler for multimedia projection display system	Robert Y. Greenberg, Jorell A. Olson, Mark Schoening	1998-08-11	$1,963,000
5719463	Retaining spring and stop means for lamp mount	Martin N. Hassink	1998-02-17	$75,110,000
5594294	Lamp assembly with a resilient retaining lamp mount structure	John J. Cowling, D. Aaron Crites, Dale K. Mikol	1997-01-14	$27,711,000
5479102	Simulated load circuit for simulating the arc impedance of an electrodless discharge lamp	Sayed-Amr El-Hamamsy, Michael M. Secen, Mark E. Duffy	1995-12-26	$30,214,000
5332970	Method for measuring the impedance of an electrodeless arc discharge lamp	Sayed-Amr El-Hamamsy, Michael M. Secen, Mark E. Duffy	1994-07-26	$19,370,000
5204578	Heat sink means for metal halide lamp	Timothy P. Dever, Gary R. Allen, John M. Davenport	1993-04-20	$7,818,000
5107165	Initial light output for metal halide lamp	Timothy P. Dever, Gary R. Allen, John M. Davenport	1992-04-21	$7,347,000

Gerald E. Duffy — 10 Patents

Patents per Year

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