10 Famous Philadelphia Inventions

Since the 1700s, when Benjamin Franklin developed bifocal eyeglasses, swim fins, the lightning rod, and the Franklin stove, Philadelphia has had a reputation for inventiveness.  The city has produced scores of innovations, in fields ranging from manufacturing and medicine to consumer products. Here are a few of Philadelphia’s famous inventions. 

This article was originally published January 27, 2020. Written by Patrick J. Kiger.