Rental of lifting devices, namely hydraulic truck cranes (rubber-tired, over-the-road cranes with telescoping hydraulic booms); conventional cranes (defined as those cranes with a lattice boom rather than a hydraulic boom), both truck and crawler types; and rough terrain cranes (rubber-tired, off-road cranes); boom carries mounted on standard sized trucks; platforms manlifts; aerial basket lifts; and telescoping forklifts, with and without operators, and the repair and servicing of such lifting devices