Pencil Eraser Patent Presented by Irene Varela
Some History… • For a long time people erased with bread • 1770 Edward Naime created first rubber eraser • 1776 Joseph Priestley suggested the use of a substance that erases lead • 1839 Charles Goodyear discovers vulcanization
A Pencil with an Eraser… • INVENTION: Pencil with Eraser • INVENTOR: Hyman L. Lipman, U.S. • YEAR: 1858
Any Questions??? Thank you for your time!