U.S. federal trademark · Serial No. 78515284 · Reg. No. 3097503
non-metal cylinder of fiberglass and insulated with a ladder for ingress and egress through the cylinder, for use in construction and repairing to protect and provide human access to subsurface objects such as valves and pipes
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.