Electric and electronic systems for the automatic opening and closing of doors, windows, shutters, and gates; electric, electronic, optical, photoelectric, electromagnetic, magnetic, and radar systems for remote opening and closing of doors [, windows, shutters, and gates;] electric and electronic locks [and latches]

'automat':7 'close':10,30 'door':12,32 'electr':1,17,37 'electromagnet':21 'electron':3,18,39 'gate':16,36 'latch':42 'lock':40 'magnet':22 'open':8,28 'optic':19 'photoelectr':20 'radar':24 'remot':27 'shutter':14,34 'system':4,25 'window':13,33

PORTALP

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