Before revision: The patent of the X5 describes it as: Current versions alt=Bullworker Isometric and ISO-MOTION Strength Training Equipment |Bullworker Products Though Bullworker's popularity fell off in the 1980s when personal gyms became readily available, new models had been created by Hughes Marketing, LLC: the Bullworker Bow Classic and the Bullworker Steel-Bow.
After revision: The patent of the X5 describes it as: Current versions alt=Bullworker Isometric and ISO-MOTION Strength Training Equipment |Bullworker products Though Bullworker's popularity fell off in the 1980s when personal gyms became readily available, new models had been created by Hughes Marketing, LLC: the Bullworker Bow Classic and the Bullworker Steel-Bow.