When an idea blows up in an inventor’s face, the inventor usually isn’t too happy. Not so with Walter E. Diemer.  In 1928, Diemer was a 23-year-old accountant for the Fleer Chewing Gum Company in Philadelphia. But on his lunch hour and after work, he was an inventor.             Diemer’s office in the Fleer Company was near the chewing gum production machines. When Gilbert Mustin, who ran the company at the time, tried to create a bubble gum, he put the small vat for mixing his recipes in a corner next to Diemer.             “He said to me, ‘Watch that, will you?’” Diemer recalled in a 1992 interview. “After awhile, I was not only watching it, I was doing it.”             Diemer experimented with recipes for a gum base and hit on success in September of 1928 when he Read more…