Campbell X-ray and high-frequency apparatus is the standard of the world : it has no peer.

  • Campbell Electric Company (Lynn, Mass.)
Date:
[1911], ©1911
Catalogue details

Licence: Public Domain Mark

Credit: Campbell X-ray and high-frequency apparatus is the standard of the world : it has no peer. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    Auto-Condensation—Auto-Conduction—Auto- Induction. Violet Ray—Also for applying Sinusoidal and Thermo Faradic Currents Head Section for D'Arsonval treatment Condenser Metal hand electrode Leg Support for D'Arsonval treatment CAMPBELL HIGH FREQUENCY TREATMENT CHAIR The Electric Chair (Patented)