who invented the mechanical pencil

Subject: who invented the mechanical pencil

Date: Wed Dec 9 08:37:28 1998
Posted by zach gillespie
Grade level: 7-9
School: Otsego middle school
City: grand rapids State/Province: oh
Country: usa
Area of science: Science History
ID: 913214248.Sh

Message:


who invented the mechanical pencil and what year was it invented?
where was it first manufactured?
how was it constructed?

Re: who invented the mechanical pencil

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