G.E., KRUPP NAMED AS A PATENT POOL SLOWING US IN WAR; J.H. Lewin Tells Senators Tungsten-Carbide Monopoly Has Cut Our Production AND THUS HELPED OUR FOES Material, Vital in Tooling Work, Rose to $453 a Pound Here, Justice Official Charges PARADOX: PATENT POOL BECOMES BOTTLENECK G.E., KRUPP NAMED AS A PATENT POOL
J H Lewin testifies; illus