Electrically Driven Domestic Vacuum Cleaning Systems which Comprise a Central Source of Vacuum, Conduits Leading to Wall Outlets, Flexible Hoses and Vacuum Cleaning Heads

'central':10 'clean':5,23 'compris':8 'conduit':14 'domest':3 'driven':2 'electr':1 'flexibl':19 'head':24 'hose':20 'lead':15 'outlet':18 'sourc':11 'system':6 'vacuum':4,13,22 'wall':17

Electrically Driven Commercial Vacuum Cleaning Systems which Comprise a Central Source of Vacuum, Conduits Leading to Wall Outlets, Flexible Hoses and Vacuum Cleaning Heads

'central':10 'clean':5,23 'commerci':3 'compris':8 'conduit':14 'driven':2 'electr':1 'flexibl':19 'head':24 'hose':20 'lead':15 'outlet':18 'sourc':11 'system':6 'vacuum':4,13,22 'wall':17

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