Austria #B146-51 Inventors - 1936 Mint NH Set of 6

Austria honors its contribution to technology with this set picturing Austrian inventors, including Josef Ressel who invented the ship propeller, Viktor Kaplan who invented the power-generating turbine, and Carl Auer von Welsbach who made improvements to the light bulb. Surcharges from the sale of these stamps went to a fund to aid inventors. (Austria #B146-51)