(under subclass 272) Subject matter wherein the material of which the storage medium is made is specifically stated.
(1) Note. Where not limited to structure of the storage medium as classified here, the specific material is classified either in blank or starting material, or in the chemical class relating to such composition or material.
SEE OR SEARCH CLASS
252, Compositions, appropriate subclasses for starting materials not limited to structure of the stock or starter article.
346, Recorders,
200+, for a record blank without grooves.
352, Optics: Motion Pictures, 92, 102+, and 232+ for structure of storage medium structure limited to motion picture.
360, Dynamic Magnetic Information Storage or Retrieval,
131+, for structure of record medium limited to magnetic storage.
425, Plastic Article or Earthenware Shaping or Treating: Apparatus, appropriate subclasses for subject matter not including storing of information.
427, Coating Processes, appropriate subclasses for article and process of making where not limited to a blank with an information track.
428, Stock Material or Miscellaneous Articles,
44+, for stock material without an information bearing track.
