Johan Petter Johansson

1853 — 1943

Known as JP in Sweden, Johan Petter Johansson is notable for having invented numerous tools, obtaining 100 patents in total.  Trained as a blacksmith in his youth, he later he experimented with electrical objects, pendulums,  and other mechanical things.  His tool company, still in production, has sold over 100 million wrenches to date.