Ammeters; Galvanometers; Steelyards; Voltmeters; Balances; Battery cases; Coils, electric; Educational apparatus, namely, manipulative blocks used as teaching aids for the visualization of math concepts; Electric buzzers; Electromagnetic coils; Electronic warning bells; Laboratory chemical reactors; Lever scales; Magnets; Measuring rulers; Optical lenses; Safety goggles; Wires, electric; Educational apparatus, namely, blocks used as teaching aids for modeling chemical compounds, visualization of math concepts

'aid':18,53 'ammet':1 'apparatus':11,47 'balanc':5 'batteri':6 'bell':31 'block':14,49 'buzzer':26 'case':7 'chemic':33,56 'coil':8,28 'compound':57 'concept':24,61 'educ':10,46 'electr':9,25,45 'electromagnet':27 'electron':29 'galvanomet':2 'goggl':43 'laboratori':32 'lens':41 'lever':35 'magnet':37 'manipul':13 'math':23,60 'measur':38 'model':55 'name':12,48 'optic':40 'reactor':34 'ruler':39 'safeti':42 'scale':36 'steelyard':3 'teach':17,52 'use':15,50 'visual':21,58 'voltmet':4 'warn':30 'wire':44

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