(under the class definition) Subject matter directed to the verification of statistical record data, either perforations or markings, against a master record or keyboard setting.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37+, for determination of the presence of perforations in sheet or other material without regard to location by using fluid under pressure (positive or negative).
157, for similar verification of sprocket apertures in picture films and record strips.
159, for sensing perforations in sheet material without regard to location therein.
SEE OR SEARCH CLASS
234, Selective Cutting (e.g., Punching), 34, for a selective punching machine provided with verification means.
235, Registers,
431, for calculators that compare two or more sets of data carried upon record cards, etc., and subclasses 439+ for mechanisms for sensing or analyzing data on a record, and see the search notes to such subclasses.
