Williams Leslie G: Food service system. Standex International Corporation, Wilson Leonard & Fraser, September 30, 1975: US3908749 (88 worldwide citation)

A food service system comprising a cart that is movable from a central food preparation location to a remote food service location. The cart is insulated and has a rack for a plurality of individual meal service trays. Each tray carries cold foods in suitable dishes and a heat-retaining food service ...

Simonton Robert D, Axe Albert A: Automatic grinding machine. Crescent Manufacturing Company, Wilson Leonard & Fraser, July 9, 1974: US3822510

A machine for grinding a cutting surface on an article wherein the machine has magazine means for automatically feeding the articles to be ground to a grinding position and means for automatically ejecting the ground articles into a hopper, bin or the like.