Electrical novelties : the ultra vacuum electrodes, X-ray tubes and stands, the multiple spark interrupter, spark lamp to produce violet rays, spark regulator for coil, electric heaters, X-ray plates (1903)
Swett & Lewis Company, Boston · Boston : Swett & Lewis Company · leaf 12
rd— Oggerunt Full directions for use accompany each lamp. Complete catalogue of Violet ray apparatus on application. The spark lamp may be used in connection with an ordinaryRuhmkorff coil, if our set of extra strong condensers are used. Theset consists of a pair of large, specially constructed… … ^^ Type D
Electric apparatus and appliances · X-rays · Electrical Equipment and Supplies
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