Recorded computer software for operation of railway traffic control systems and apparatus that puts the power to lift a block in the hands of a railway worker for use in ensuring the safety of railway workers and property

'apparatus':12 'block':20 'comput':2 'control':9 'ensur':31 'hand':23 'lift':18 'oper':5 'power':16 'properti':38 'put':14 'railway':7,26,35 'record':1 'safeti':33 'softwar':3 'system':10 'traffic':8 'use':29 'worker':27,36

Design and development of computer software for use in railway traffic control systems and apparatus for safety of railway workers and property

'apparatus':15 'comput':5 'control':12 'design':1 'develop':3 'properti':22 'railway':10,19 'safeti':17 'softwar':6 'system':13 'traffic':11 'use':8 'worker':20

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