Emma V. Carlsson, US2314387A
Balanced Diet Selecting Apparatus.
Image credit: Carlsson, E.V. (1941)
On March 23, 1943, Emma Victoria Carlsson of Greensboro, North Carolina, received a patent for an educational device that taught users how to assemble balanced meals. Using a see-saw board and weighted food blocks, the apparatus visually and mechanically demonstrated whether a selected menu was nutritionally appropriate.
Date of Application: 20 October 1941
Date of Issuance: 23 March 1943
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Francesca Chiaradia
PhD Student in Economics
My research interests include law and economics, economics of innovation, and information economics.