U.S. federal trademark · Serial No. 86955450 · Reg. No. 5397028
Manhole or vault ventilation systems consisting of metal and non-metal manhole covers, with or without a water control design feature to divert water away from the manhole, and an exhaust pipe, with or without an exhaust fan, to remove combustible gases from manholes and vaults
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.