Inventors and inventions have helped to shape our world. You have been working hard and have put in many long hours. Now you finally have your invention complete. You race to the US Patent office to register your invention. When you walk in the office the door closes and locks behind you! You see a sign that says “you must show us you are worthy of a patent by solving the clues”. The timer starts on the desk. Hurry and solve the clues and earn the patent before the time runs out.