(under subclass 23) Dispensers in which (1) the information device is operated by the flow of material either through the usual dispenser channels or overflowing therefrom, or (2) the surplus material flows out of an opening specially provided for signaling purposes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36, for totalizers operated by flow meters. The mere fact that flow is taking place is shown here.
159, for transparent devices for observing flow, without the aid of a flow-operated movable element.
SEE OR SEARCH CLASS
116, Signals and Indicators,
112, and 264+. 340, Communications: Electrical,
603+, for electrical automatic fluent material responsive indicating systems.
