Generating and applying electricity for medicinal or other purposes, &c. : letters patent to Robert Vacy Ash of Marylands Road, Saint Peter's Park in the county of Middlesex for an invention of "An improved method of generating and applying electricity for medicinal or other purposes, and in the " : Sealed the 1st July 1879, and dated the 28th April 1879.

Licence: Public Domain Mark

Credit: Generating and applying electricity for medicinal or other purposes, &c. : letters patent to Robert Vacy Ash of Marylands Road, Saint Peter's Park in the county of Middlesex for an invention of "An improved method of generating and applying electricity for medicinal or other purposes, and in the " : Sealed the 1st July 1879, and dated the 28th April 1879. Source: Wellcome Collection.