U.S. federal trademark · Serial No. 85973215 · Reg. No. 4651321
Construction and construction management of tunnels and underground structures, namely, auger boring, tunneling, pipe jacking, slip-lining, and vertical shaft construction in the fields of heavy highway, pedestrian tunneling, and municipal water and sewer; Maintenance and repair of tunnels and underground structures in the fields of heavy highway, pedestrian tunneling, and municipal water and sewer; Rental and sales of construction equipment for the construction of tunnels and underground structures in the fields of heavy highway, pedestrian tunneling, and municipal water and sewer construction, maintenance, and repair
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