Felt’s first prototype presented to the Smithsonian Institution
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- Details
- Description
- Date
- 1937
- Credit Line
- Courtesy of the Library of Congress
- Keywords
- Tarrant, Robert; Felt, Dorr E.; Mechanical calculation; Comptometer
- Object ID
- 500004222
Felt’s daughter, Virginia Felt Koch, and her husband Raymond, present his “macaroni-box” prototype to Charles Abbot, Secretary of the Smithsonian.
