Adding-Machine.
Description:
Patent for a new and improvement in adding-machines in which a mechanical wheel has teeth. " The object of the invention is to provide the means for adding columns of figures by machinery"(lines 13-15), with instruction and illustration
Date:
February 12, 1884
Creator:
Barmore, Albert King
Item Type:
Refine your search to only
Patent
Partner:
UNT Libraries Government Documents Department