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Publication of DD106949A5publicationCriticalpatent/DD106949A5/xx
A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
A63B21/06—User-manipulated weights
A63B21/0608—Eccentric weights put into orbital motion by nutating movement of the user