Kabushiki Kaisha Meitaku Shisutemu

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5283673 Surface luminous source panel with areas having different reflector speck densitiesExpiredSep 04, 91Feb 01, 94[F21V, G02F]
5207493 Edge light panel deviceExpiredJul 03, 91May 04, 93[F21V]
5178447 Edge light panelExpiredJun 26, 91Jan 12, 93[F21V]

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