[Trade Journal]
Publication: Western Electrician
Chicago, IL, United States
vol. 16, no. 2, p. 23, col. 2
BUSINESS.
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Porcelain is one of the most peculiar of the manufactured products, and can vary from the most porous and brittle to a most impervious and tenacious material. R. Thomas & Sons company, the largest porcelain manufacturer in the world, is so baking and preparing the porcelain which it places upon the market for electrical purposes as to make it absolutely moisture proof.
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