CONTROL, LAUNDRY MACHINES. A DEVICE DESIGNED TO CONTROL THE OPERATION
OF LAUNDRY MACHINES, SUCH AS WASHING, RINSING, ADDING DETERGENTS, WATER
LEVEL, ETC. MAY BE OPERATED BY A MASTER DIAL, PERMANENT FORMULA CHART,
PRE-SET SELECTORS, PUSH BUTTONS, OR PUNCHED PROGRAM CARDS.
