Filed: April 11, 1988 RADIO AND TELEVISION SETS AND ACCESSORIES, AUDIO AND VIDEO RECORDING EQUIPMENT AND ACCESSORIES, AURAL AND TELEVISION TRANSMITTERS… Owned by:OY HELVAR Serial Number:73721531
Filed: October 6, 1994 electrical, integrated, and printed circuits and circuit boards, electric coils, circuit breakers, electrical conductors… Owned by:OY HELVAR Serial Number:74610117
Filed: March 2, 1998 Electrical, integrated, and printed circuits and circuit boards, electric coils, circuit breakers, electrical conductors… Owned by:OY HELVAR Serial Number:75442374