(under subclass 52) Device in which the prong penetrates the material surface at points or areas of such surface which have not been previously modified, whereby the prong makes the recurrent variations.
(1) Note. The patents in this subclass are not to be confused with the patents of Class 83, Cutting. To be placed herein, the perforating or penetrating means must be disclosed solely as means facilitating feed and the perforations produced must be unused at any other time for any purpose. Furthermore, if the patent discloses a nonfeeding use for such perforations, placement of the original patent will be in Class 83 on the basis of the structure producing such perforations or in another class on the basis of the use for the perforations.
SEE OR SEARCH CLASS
83, Cutting, appropriate subclasses, especially
218, for similar apparatus wherein a nonfeeding use of the modifications produced is disclosed.
