Society of Glass Technology · [Sheffield] · leaf 510
gear-box andthe vulnerable working parts are shielded from the direct heat ofthe flames by slabs of refractory materials. S. E. 103. Glass Finishing Tool. A. J. Sanford, Newark, Ohio.Assignor to A. H. Heisey & Co., Newark, Ohio (U.S.A. Pat.,November 28th, 1922, No. 1436825. Filed, June 17th,…
Glass
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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