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Herts, GB
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last 30 patents
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Patent Grant
Process for making a mold piece having a main curved surface bearin...
Patent number
7,520,972
Issue date
Apr 21, 2009
Essilor International
Gerhard Keller
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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last 30 patents
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Patent Application
Process for making a mold piece having a main curved surface bearin...
Publication number
20060096865
Publication date
May 11, 2006
Essilor International Compagnie Generale d'Optique
Gerhard Keller
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patent Application
Tuneable liquid crystal optical filter
Publication number
20030039019
Publication date
Feb 27, 2003
Timothy Large
G02 - OPTICS