Since 1993, a placard at the entrance of The Simpsons Ride at Universal Studios Hollywood has displayed the ride system’s patent (5,192,247), carried over from Back to the Future: The Ride. #BTTF #ThemeParkHistory #TheSimpsons #LifeAtUSH #CowMissing #CowMissingOnYouTube lifeatush #UniversalStudiosHollywood unistudios BTTF 📷: thestudiotouronline