|
|
|
Neosho Daily News - Neosho, MO
Lead Pencil and Eraser
email print
About this blog
Recent Posts
Sept. 27, 2014 12:01 a.m.
Sept. 20, 2014 12:01 a.m.
Sept. 13, 2014 12:01 a.m.
Sept. 6, 2014 12:01 a.m.
Aug. 30, 2014 12:01 a.m.
By Liz Davis
March 30, 2013 12:01 a.m.



March 30, 1858

Lead Pencil and Eraser

Inventions aren't always something new. Sometimes they are something old but used in a new way. On March 30, 1858, Philadelphian Hyman L. Lipman was granted patent #19,783 for his "combination lead pencil and eraser." Both items were in use at the time, but had never been part of the same writing instrument.

http://www.lawabel.com/this-week-in-intellectual-property-history-for-the-week-of-july-25-2011/

Recent Posts

    latest blogs

    • Community
    • National