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Leona Chalmers
Leona Chalmers
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What happened with Leona Chalmers on 1 January, 1950

1 January, 1950

Approximate date when Leona Chalmers patented an updated design of her menstrual cup, this was after the rubber shortage during World War II. This redesign may have incorporated new materials or addressed issues identified with the original design.
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