Opal M. Gross, US2462956A
Culinary Utensil.
Image credit: Gross, O.M. (1945)
On March 1, 1949, Opal M. Gross of Denver, Colorado, received a patent for a modular cooking vessel made from rigid rings joined in a flat frame. Frusto-conical cups locked into the rings by means of exterior lugs, allowing cooks to combine any number of identical cups into a single, stable unit.
Date of Application: 6 March 1945
Date of Issuance: 1 March 1949
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Francesca Chiaradia
PhD Candidate in Economics
My research interests include innovation, law, and information economics.