Renwal Electric Vaporizer for use in the treatment of bronchial diseases. This was designed by Nicholas Lawner (Renwal spelled backward), and available from American Sundries Co., Inc., in Brooklyn, N.Y.
Ref: Nicholas Lawner, “Vaporizer,” U.S. Patent 1,625,034 (April 19, 1927), assigned to American Sundries Co., Inc.
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