Basics of Patent Research.pdf
Photon Push-Pull Radiation Detector For Use in Chromatically Selective Cat Flap Control And 1000 Megaton Earth-Orbital Peace-Keeping Bomb
This is one of my favorite funny patents of all time. The inventor discloses a solution for detecting the color of a cat and then dealing firmly with intruders. The cat next door kept trying to steal his own cat's food but thanks to Pedrick's new cat flap design, an intruder would be taken by rocket into outer space.