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Ulrich Zirfas
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Bad Gandersheim, DE
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Patents Grants
last 30 patents
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Patent Grant
Optical diffuser for producing a circular light field
Patent number
7,729,054
Issue date
Jun 1, 2010
Schott AG
Ralf Becker
F21 - LIGHTING
Information
Patent Grant
Optical diffuser for producing a circular light field
Patent number
7,443,588
Issue date
Oct 28, 2008
Schott AG
Ralf Becker
F21 - LIGHTING
Patents Applications
last 30 patents
Information
Patent Application
OPTICAL DIFFUSER FOR PRODUCING A CIRCULAR LIGHT FIELD
Publication number
20090015925
Publication date
Jan 15, 2009
Ralf Becker
G02 - OPTICS
Information
Patent Application
Optical diffuser for producing a circular light field
Publication number
20050063064
Publication date
Mar 24, 2005
Ralf Becker
G02 - OPTICS
Information
Patent Application
Light-generating apparatus having a reflector
Publication number
20040264197
Publication date
Dec 30, 2004
Schot Glas
Lars Bewig
F21 - LIGHTING
Information
Patent Application
Reflector
Publication number
20020172830
Publication date
Nov 21, 2002
Ulrich Zirfas
F21 - LIGHTING