David and Susie Biddulph are betting that their card file with a twist will transform their small Central Florida company into a national marketing power. The Biddulphs, co-owners of Market Force Corp ...
Arnold Neustadter,85, who invented the Rolodex card file to organize phone numbers, died Wednesday in New York. His first successful invention was the spring-mounted personal phone directory that pops ...
Arnold Neustadter, whose invention of the Rolodex card file helped so many millions of people organize their professional and private lives that it became a lasting symbol of the art of networking, ...
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