Lloyd's biggest money-maker was the rubber ice cube tray. One day while collecting sap for maple syrup in the woods, he noticed that slush flaked off his rubber boots easily. He designed and patented a rubber tray. Sales from this invention earned Copeman half a million dollars. (That is about $10 million today.)

Hmm... I guess he is to blame for the rubber things taking up all the college kids space in the little dorm refrigerators...

Oh and he is Linda Ronstadt's dad...

� Lloyd Groff Copeman: The Patent Man � Dig Michigan!