The Trenton Potteries Company was founded in 1892 by 5 merger companies, Crescent, Delaware, Empire, Enterprise, and Equitable in Trenton, New Jersey. It specialized in pottery and kept its headquarters in Trenton, New Jersey. It became defunct somewhere between 1967 and 1969.
Si-Wel-Clo (At least 1915-1930)
Bathrooms of Character (1930)