educational teaching devices, namely, sheets with questions and/or objects coordinated with electronically conducted ink and an electronic tester than can determine the conductivity of the electronically conductive ink with sound and light indicators, sold together as a unit

'and/or':8 'conduct':13,23,27 'coordin':10 'determin':21 'devic':3 'educ':1 'electron':12,17,26 'indic':33 'ink':14,28 'light':32 'name':4 'object':9 'question':7 'sheet':5 'sold':34 'sound':30 'teach':2 'tester':18 'togeth':35 'unit':38

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