My subscription to Life expired, but I still have a subscription to Mad.
Friday, August 2, 2013
Vintage circa 1940 art deco style postcard advertising the Tungsram radio tube and light bulb manufacturer of Hungary. In business since 1896, Tungsram was awarded a patent for electric bulbs with a tungsten filament in 1903. Later in 1934, they also announced a patent for an electric bulb filled with krypton. Both provided a longer lifetime for electric bulbs. (Source: Wikipedia)