The patent holder in the karaoke device is Roberto del Rosario, that is with the Philippines. He produced the karaoke's sing-along program in 1975 and is particularly identified as the only holder of a patent for your karaoke program on the planet.[20] Later developments[edit] Boombar is an additional one of https://xn--939au0g6rj1ue34n9rrf5c.online/