Halliwell-Shelton Violet Ray

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Halliwell-Shelton Violet Ray
Vendors Halliwell-Shelton Electric Co.

The Halliwell-Shelton Violet Ray is a violet ray-type device that was marketed as an instrument for electro-therapy. It was sold by Halliwell-Shelton Electric Co. of New York, NY, a merger of Halliwell with the Shelton Electric Laboratories, manufacturer of the Shelton Violet Ray.