Philadelphia inventor Hymen L. Lipman rushed heroically to the aid of mistake-prone schoolchildren, draftsmen and artists everywhere when he secured the patent for the pencil with eraser on this day in history, March 30, 1858. “Be it known that I, Hymen L. Lipman, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful …
Read More »On this day in history, March 30, 1858, American visionary Hymen Lipman patents pencil with eraser
