Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 501
Ransome bar. places projections; Mr. Edwin Thacher rolls his steel into sec-tions alternately flat and round. All these contours have large … Corrugated steel bar. St. Louis Expanded Metal Fire Proofing Co. surfaces at which metal and concrete adhere. Reinforcing barsdesigned by Mr. Julius Kahn and by the Hennibique Construc-
Inventions · Inventors
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