Asked by cindy
Who was the only US President to be granted a patent and what was this for?
I've just learned something. :-) Check this site.
http://inventors.about.com/od/lstartinventors/a/Abraham_Lincoln.htm
I've just learned something. :-) Check this site.
http://inventors.about.com/od/lstartinventors/a/Abraham_Lincoln.htm
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