Patents by Inventor Robert H. Van Valkinburgh

Robert H. Van Valkinburgh 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).

  • Electrophotographic apparatus
    Patent number: D258964
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: April 21, 1981
    Assignee: Xerox Corporation
    Inventors: Stephen K. Bright, Robert H. Van Valkinburgh