Wall Clocks - Turbine Clock. George Nelson, 1948-1960 With his collection of Wall Clocks (1948-1960), George Nelson conceived a wide array of timepieces, many of which have since become icons of 1950s design. This product was designed by George Nelson George Nelson is regarded as one of the most important figures in American design. Active as an architect, a product and exhibition designer and a writer, he was a leading voice in the discourse on design and architecture over several decades. Vitra is the sole authorised manufacturer of specified Nelson products for markets in Europe and the Middle East.