equipment for the installation of electrical and hydraulic passenger elevators, electrical and hydraulic freight elevators and mechanical escalators, and parts therefor; namely, hoistways, hoistway enclosures, hoistway doors and gates and related interlocks, elevator cars, hoisting ropes, sheaves and counterweights, hydraulic driving machines, guide rails, balustrades and handrails, escalator steps, step chains and combplates, trusses and supporting structures

'balustrad':45 'car':34 'chain':51 'combplat':53 'counterweight':39 'door':27 'drive':41 'electr':6,11 'elev':10,15,33 'enclosur':25 'equip':1 'escal':18,48 'freight':14 'gate':29 'guid':43 'handrail':47 'hoist':35 'hoistway':23,24,26 'hydraul':8,13,40 'instal':4 'interlock':32 'machin':42 'mechan':17 'name':22 'part':20 'passeng':9 'rail':44 'relat':31 'rope':36 'sheav':37 'step':49,50 'structur':57 'support':56 'therefor':21 'truss':54

equipment for electronically, optically and acoustically controlling and monitoring the operation of elevators

'acoust':6 'control':7 'electron':3 'elev':13 'equip':1 'monitor':9 'oper':11 'optic':4

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