STEM (science, technology, engineering, math) education electronic project products, namely, kits for making audio amplifiers comprising electric audio cords, audio amplifier modules, battery cases, power switches, audio speakers and including an enclosure and instructional user guides sold as a unit; STEM (science, technology, engineering, math) education electronic project products, namely, kits for making electronic timers comprising micro-computers, digit displays, battery cases, power switches, electric pushbutton switches and circuit boards, and instructional user guides sold as a unit

'amplifi':15,21 'audio':14,18,20,27 'batteri':23,62 'board':71 'case':24,63 'circuit':70 'compris':16,56 'comput':59 'cord':19 'digit':60 'display':61 'educ':6,46 'electr':17,66 'electron':7,47,54 'enclosur':32 'engin':4,44 'guid':36,75 'includ':30 'instruct':34,73 'kit':11,51 'make':13,53 'math':5,45 'micro':58 'micro-comput':57 'modul':22 'name':10,50 'power':25,64 'product':9,49 'project':8,48 'pushbutton':67 'scienc':2,42 'sold':37,76 'speaker':28 'stem':1,41 'switch':26,65,68 'technolog':3,43 'timer':55 'unit':40,79 'user':35,74

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