Last Updated: Nov 19, 2016 Views: 1484
Thanks for your question. The book "Florenes Ovenware from the 1920's to the present" by Gene and Cathy Florence states that:
Pyrex a Division of Corning Glass Corporation started in 1917 and is still being produced today.
Fire-King was a part of Anchor-Hocking's ovenware and was started in 1941 and lasted to 2000.
Glasbake by the McKee Division of Thatcher Glass Corporation started in 1951 lasted until 1961.