Dr. Pratt's Pocket Battery and Inhaler

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As advertised in the Journal of Electrotherapeutics (1893)

Dr. Pratt's Pocket Battery and Inhaler is an patented electro-therapeutic nostrum in two parts, the battery and the inhaler, both used to apply slight electric current to the body for medical purposes, including alleviation of "nervous troubles" such as neuralgia, goiter, facial paralysis, eczema, and aches of all kinds. It was invented by Harry P. Pratt, and sold through his Pratt Electro-Medical Supply Co. of Chicago.