U.S. federal trademark · Serial No. 76603018
One each unit constructed of 80 - 120 pound paper fiber, folded in butterfly fashion to fit 1;) into a ceiling corner and/or 2;) to attach to an exterior corner; Each unit to be covered with dry wall mud forming the perfect corner
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.