"The injection moulded polypropylene bottle, designed by Julian Rowan in 1960, was one of the first all-plastic vacuum bottles. Still in production, Canadian Thermos has donated two 1997 examples, along with the earliest record of the design: a blueprint with checkerboard/pineapple pattern signed and anotated by Rowan and dated November 29, 1960. An American version of the Canadian design was introduced ca. 1963. Canadian Thermos has also donated examples of earlier 3 metal body encased glass vacuum flasks with plastic mouth, lid, and cup."