Balloons; Trampolines; Card games; Children's multiple activity toys; Dog toys; Fishing tackle; Knee pads for athletic use; Pet toys; Roller skates; Running machines; Sling shots; Surf boards; Toy bows and arrows; Toy building blocks; Wrist guards for athletic use; Yoga cushions

ISOMETRIC EXERCISORS

musical digital tone generator for adjusting the level of and combining various musical audio signals

Linear Control Circuits as Part of a Keyboard Electronic Musical Instrument for Adjusting the Level of and Combining Various Harmonic Signals