Amplifiers; Binoculars; Microscopes; Oculars; Telescopes; Food texture analyzers; Laboratory equipment, namely, microscope slides; Optical apparatus and instruments, namely, optical ports for underwater photography, dome ports for underwater photography, wet diopters, adapter lenses for underwater photography; Optical lenses; Surveying instruments; Educational apparatus, namely, manipulative blocks used as teaching aids for the visualization of math concepts

'adapt':31 'aid':48 'amplifi':1 'analyz':8 'apparatus':15,41 'binocular':2 'block':44 'concept':54 'diopter':30 'dome':24 'educ':40 'equip':10 'food':6 'instrument':17,39 'laboratori':9 'lens':32,37 'manipul':43 'math':53 'microscop':3,12 'name':11,18,42 'ocular':4 'optic':14,19,36 'photographi':23,28,35 'port':20,25 'slide':13 'survey':38 'teach':47 'telescop':5 'textur':7 'underwat':22,27,34 'use':45 'visual':51 'wet':29

SINO OPTICAL

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