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en.wikipedia.org/wiki/Mechanical_pencil

A mechanical pencil (US English) or a propelling pencil (UK English) is a pencil with a ... Mechanical pencils were first used in the 18th century, with many designs .... First patent for a mechanical pencil; Inventor never got rewards of pencil ...

pencils.com/brief-history-mechanical-pencil

Nov 18, 2014 ... But the first mechanical pencil patent wasn't applied for until 1822, when ... This is when Joseph Hoffmann invented the pushbutton clutch in ...

www.historyofpencils.com/writing-instruments-history/history-of-mechanical-pencils

Mechanical pencils are also old invention dating even from 16th century. First ones were fairly simple mechanisms, only to become more complex with time.

www.historyofinformation.com/expanded.php?id=3851

Invention of the Mechanical Pencil (December 20, 1822) ... were the first to patent a metal pencil with an internal mechanism for propelling the graphite (pencil ...

www.sharp-world.com/corporate/info/his/h_company/1915_1919

A Writing Instrument Ahead of its Time. World's First Mechanical Pencils. The mechanical pencil is well known today throughout the world, largely thanks to ...

www.quora.com/Who-invented-the-mechanical-pencil

Joey's answer is partially correct. The first patent for the mechanical pencil was granted in 1822 to the silversmith Sampson Mordan and engineer John Isaac ...

www.innovateus.net/innopedia/what-history-mechanical-pencil

The mechanical pencil was invented in 1822 by Sampson Mordan and Gabriel Riddle, in England. It was more of a refillable lead holder than a mechanical ...

discovermagazine.com/2007/may/20-things-you-didnt-know-about-pencils

May 14, 2007 ... ... who patented the first pencil sharpener in 1828; and Therry des Estwaux, who invented an improved mechanical sharpener in 1847.

www.reference.com/history/invented-mechanical-pencil-c623087f623c5684

The first patent recorded for a mechanical pencil was filed in England in 1822. Sampson Mordon and Gabriel Riddle invented what was essentially a refillable ...

www.cultpens.com/pencyclopedia/guide-to-mechanical-pencils

Our guide to mechanical pencils - features they have, and how to choose the pencil ... The first pencils were more like modern clutch pencils than what we now think .... it was invented in Japan!) where the pencil is lifted from the paper several ...