Salma H. Smart, US812305A
Core for Paper-Rolls.
Image credit: Smart, S.H. (1906)
On February 13, 1906, Salma H. Smart of Grand Rapids, Wisconsin, patented an improved core for paper rolls. Her interlocking strip design created a strong, cylindrical core that allowed paper to wind smoothly and evenly without wrinkles.
Date of Application: 15 June 1905
Date of Issuance: 13 February 1906
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Francesca Chiaradia
PhD Candidate in Economics
My research interests include innovation, law, and information economics.