Scientific, electric, electronic, weighing, measuring, and signaling apparatus and instruments, namely, apparatus or instruments for testing engine lubricating oil under simulated operating conditions, especially under moderately high temperature; and depositor rods for use in testing lubricating oil, mantles for heating lubricating oil, and other component parts

'apparatus':8,12 'compon':45 'condit':23 'depositor':30 'electr':2 'electron':3 'engin':17 'especi':24 'heat':40 'high':27 'instrument':10,14 'lubric':18,36,41 'mantl':38 'measur':5 'moder':26 'name':11 'oil':19,37,42 'oper':22 'part':46 'rod':31 'scientif':1 'signal':7 'simul':21 'temperatur':28 'test':16,35 'use':33 'weigh':4

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