Espresso Machines - Which One is Right For You? This is what people think of when they imagine an espresso machine. These are pumps-driven machines that give the user the ability to control grinding, tamping, and extraction time. Luigi Bezzera, Desiderio Pavoni and others developed patent-pending improvements to the design. https://coffeee-uk38882.blog4youth.com/30337711/a-peek-inside-the-secrets-of-espresso-coffee-maker