Cableless directional steering system for ground drilling equipment comprising a guidance probe that functions as part of a drill string in the drilling of boreholes and a surface computer used in conjunction with the guidance probe to interface with the operator, used in the field of borehole drilling

'borehol':25,47 'cableless':1 'compris':9 'comput':29 'conjunct':32 'direct':2 'drill':7,19,23,48 'equip':8 'field':45 'function':14 'ground':6 'guidanc':11,35 'interfac':38 'oper':41 'part':16 'probe':12,36 'steer':3 'string':20 'surfac':28 'system':4 'use':30,42

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