Ava R. Coleman, US996458A
Game Apparatus.
Image credit: Coleman, A.R. (1911)
On June 27, 1911, Ava R. Coleman of Palmyra, Virginia, patented a magnetic tilting-board game. Using irregularly rolling balls and a hidden, pivoting magnet that disrupted their paths, her design added mystery, challenge, and surprise to simple chance-and-skill play.
Date of Application: 24 October 1910
Date of Issuance: 27 June 1911
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Francesca Chiaradia
PhD Candidate in Economics
My research interests include innovation, law, and information economics.