What day is it? What day is it? May 27, 1919 – the patent for Pyrex glass was issued. You can find more interesting facts about Pyrex in my book and blog.
May 27th 1919
What day is it? What day is it? May 27, 1919 – the patent for Pyrex glass was issued. You can find more interesting facts about Pyrex in my book and blog.