U.S. federal trademark · Serial No. 77953637 · Reg. No. 4139554
Construction and repair services, namely, repair of dams and retaining walls, installation of water stops in dams, control of leakage in dams, pipes, tunnels, passageways, and conduits, repair and rehabilitation of underground pipes, conduits, and passageways; consulting services in the field of dam repair; consulting services in the field of tunneling; consulting services in the field of pipe, conduit, and passageway repair and leakage control
Machines, namely, machines used to install tubing or lining materials for lining, repair, or rehabilitation of pipes and passageways
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