Adding Machine Patent Illustration
Adding machine was patented in 1888 by W. S. Burroughs. He received patent number 388,116. Children could view his patent at: Adding Machine.
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Celebrate and Learn
I have devoted this site to all who love and interact with children. Are you a parent? Grandparent? Teacher? Librarian? Club sponsor? Are you always looking for educational and fun activities for children? Then this is the site for you!