In 1937 and 1938 New York patent-law student Chester Floyd Carlson developed the xerography process, revolutionizing the process of duplicating business documents. His patent to the process netted him a fortune.
In May 1930 Ellen Church became the first airline stewardess. United Airlines hired her and seven other women, all aged twenty-five; single; shorter than five feet, four inches; and lighter than 115 pounds. The airline argued that such women would help allay passenger fears of flying.
Michael S. Cullen, 46, opened the first true supermarket in Jamaica, Long Island, New York, in August 1930. Established in an abandoned garage, the market met with virtually instant success.
In 1932 San Antonio candy maker C. Elmer Doolin introduced mass-produced corn chips, Fritos, to the public. Doolin got the recipe from local Mexican cafe owner Gustave Olgin and produced the chips using a modified potato ricer to cut the tortilla dough.
In 1934.....
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