CHOI, KEY-YOUNG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6744977 Electric heater with prevention plate on back-reflection domeExpiredDec 16, 02Jun 01, 04[H05B]
6738565 Halogen lamp coupling structure for electric heaterExpiredJun 26, 02May 18, 04[H05B]
6597091 Halogen lamp supporting deviceExpiredFeb 13, 02Jul 22, 03[H01J]
6526227 Radiant electric heaterExpiredFeb 26, 02Feb 25, 03[F24C, F25D]
6453121 Radiant heater with subsidiary reflecting plate adjacent halogen lampExpiredJan 11, 01Sep 17, 02[F24H, F24D]

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