Patents by Inventor Norman J. Henderson

Norman J. Henderson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for removing warps or surface irregularities from polyvinyl phonograph records
    Patent number: 4225298
    Abstract: Method and apparatus for removing warps or surface irregularities from polyvinyl phonograph records by exerting forces vertically and/or laterially on a record. The apparatus includes a plurality of plate-like members which are used to engage with the lead-in lips and/or label regions on one or more records and to apply appropriate forces. The effectiveness of the method and apparatus is enhanced by the application of moderate heat from an external source.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: September 30, 1980
    Inventor: Norman J. Henderson