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.
![](https://shinyhappypyrexpeople.com/wp-content/uploads/2023/07/349072318_1209677089741967_6462618699733774687_n.jpg)
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.