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9 feb 1899 anni - medical syringe

Descrizione:

Oh, the wonders of modern medicine. In 1899, Letitia Geer invented a medical syringe that could be operated with only one hand. Remember her the next time your doctor injects you with only one hand.

Aggiunto al nastro di tempo:

Data:

9 feb 1899 anni
Adesso
~ 126 years ago