In the 60s, the Fisher Pen Company reportedly invested $1 million to create a “space pen,” one that could write upside-down, in frigid or roasting conditions. They sold 400 units to NASA and 100 to the Soviet Union.Related Facts:Sony sold 385 million Walkman units between 1979 and 2009.John F Kennedy had such concerns about the space…The man who created the upside down bottle sold the…