Letitia Geer
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Letitia Geer was an American inventor who created a one-handed medical syringe in 1899, greatly enhancing the efficiency and precision of administering injections. Her innovation laid the groundwork for modern syringes and significantly advanced medical practices.
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Letitia Geer invented a one-handed medical syringe in 1899, significantly improving the precision of injections.
Jutarnji list - Znate li da su perilicu suđa i solarno grijanje izumile žene? Bez još osam ženskih izuma danas ne možemoJutarnji List – Croatian daily newspaper, est. 1998·
Croatia· 2025-03-02
Croatia· 2025-03-02
