Isaac Louis Pulvermacher

Isaac Louis (Lewis) Pulvermacher (March 15, 1815 - September 12, 1884), often credited as J.L. Pulvermacher, was a medical electrician and inventor of Pulvermacher's Portable Hydro-Electric Chain, the effective basis for all later varieties of electro-galvanic belts that proliferated in the late 19th century.