(under subclass 120) Device wherein the responsive means consists of a number of distinct mechanisms or electrical circuits each responsive to such signal or impulse from an external or unspecified source.
(1) Note. A number of patents which disclose plural input channels are originally classified in subclass 121.
SEE OR SEARCH THIS CLASS, SUBCLASS:
45, for a device having independent manual input means for a plurality of tool fields.
121, for a disclosure of plural input means of the differentially-positionable type.
