U.S. federal trademark · Serial No. 88080042
Portland cement
Calcium chloride; Caustic soda (sodium hydroxide); Diatomaceous earth; Oxalic acid; Oxides; Percarbonates; Soda ash; Sulfates; Ammonium sulphate; Calcium oxides; Magnesium chloride; Sodium bicarbonate; none of the foregoing for use in aquariums
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.