U.S. federal trademark · Serial No. 75110686 · Reg. No. 2141877
playthings which are similar in purpose to juggling; a set consists of two 18-inch long dowels which are held in each hand and a center dowel rod which is weighted equally on each end and maneuvered between them; the object is to keep the weighted center stick spinning and moving; (this type of gravity toy is sometimes referred to generically as "rhythm sticks or gravity sticks"
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