Your Complete Guide to Making Millions with Your Simple Idea or Invention

Everyone has had a good idea for a new product or service that would make life more comfortable, easier, or just more fun. What do all these famous inventions have in common: air conditioning, airbags, bandages, barbed wire, blow dryers, can openers, cement, chewing gum, computers, credit cards, doughnuts, jeans, microwave ovens, paper towels, Play-Doh, Post-it Notes, potato chips, roller coasters...