Lederman, Norman Trademarks
FLIGHTSOUND
Filed: April 6, 1998
hearing assistance system comprised of infrared transmitter, audio reciever and sound amplifier for hard of hearing people…
Owned by: Lederman, Norman
Serial Number: 75462304
SMARTVOICE INTELLIGENT SOUND FIELD
Filed: June 22, 1998
hearing assistance sound system for sound reinforcement in classrooms, meeting rooms, etc
Owned by: Lederman, Norman
Serial Number: 75506743
SMARTSPEAKER INTELLIGENT
Hearing assistance public address system for hard of hearing children in classroom applications and other sound reinforcement…
Owned by: Lederman, Norman
Serial Number: 75651127
