The patent holder in the karaoke equipment is Roberto del Rosario, who is with the Philippines. He formulated the karaoke's sing-alongside system in 1975 and is identified as the only holder of a patent for your karaoke system on this planet.[20] Later on developments[edit] These gadgets frequently support State-of-the-art characteristics, https://xn--939au0g6rj1ue34n9rrf5c.online/