The patent holder from the karaoke equipment is Roberto del Rosario, who's in the Philippines. He designed the karaoke's sing-alongside process in 1975 which is identified as the only real holder of the patent for the karaoke method on this planet.[twenty] Afterwards developments[edit] Boombar is yet another a type of https://xn--939au0g6rj1ue34n9rrf5c.online/