(under the class definition) Device in accordance with part (1) or part (2) thereof including a discrete means for punching an opening through the thickness dimension of a sheet* for the purpose of mounting such sheet on the sheet retainer* means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7, for a sheet retainer which may serve to impale a sheet and insert a strand through the sheet.
25, for the combination of a means which cooperates with a sheet retainer to force a sheet on the sheet retainer.
SEE OR SEARCH CLASS
83, Cutting, appropriate subclass for a device for cutting (e.g., punching, etc.), an aperture in a sheet.
