Electrically operated barrier opening devices; namely remotely controllable garage door openers comprising radio frequency transmitters and receivers and electric motor driven mechanisms for lifting and lowering garage doors in response to signals transmitted between the radio frequency transmitters and receivers

'barrier':3 'compris':12 'control':8 'devic':5 'door':10,28 'driven':21 'electr':1,19 'frequenc':14,37 'garag':9,27 'lift':24 'lower':26 'mechan':22 'motor':20 'name':6 'open':4,11 'oper':2 'radio':13,36 'receiv':17,40 'remot':7 'respons':30 'signal':32 'transmit':33 'transmitt':15,38

EASY-C SYSTEM

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