A clear ice maker has an improved stationary open-top water tray comprising a plastic frame with metal inserts in the tray side, end and bottom walls for containing a predetermined quantity of water. The tray receives a removable grid having a plurality of open-bottom, open-top ice mold cavities and...http://www.google.es/patents/US3952539?utm_source=gb-gplus-sharePatente US3952539 - Water tray for clear ice maker
