Sanborn Viso Cardiette
In 1928 Frank Sanborn's company (founded 1917 and acquired by Hewlett-Packard in 1961 and since 1999, Philips Medical Systems) converted their table model electrocardiogram machine into their first portable version weighing 50 pounds and powered by a 6-volt automobile battery. For more details on the history of electrocardiography click here.

Currently on loan to the Royal College of Surgeons, London.


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