Daniel E Fiveash: Bathtub liner. Pastoriza Kelly & Lowry, July 29, 1986: US04602393 (12 worldwide citation)

An integral sheet of plastic material is shaped to conform to the bottom, sides, vertical one end and sloping other end of a bathtub. The upper edges of the sheet extend beyond the upper edges of the bathtub so that the depth of the liner is greater than the depth of the bathtub thereby lessening th ...