Patents by Inventor Robert W. Van Leuven

Robert W. Van Leuven 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).

  • Patent number: 3942633
    Abstract: A holder for a book of matches comprised of an enclosure element having a back panel and top and bottom retention lips which partially enclose the match book. First and second side panels restrict lateral movement of the match book to prevent removal of the book by children. The match book strike plate is accessible only through an opening in the back panel of the enclosure which is covered by a movable guard element. The guard element is biased in a closed position by means of a spring mechanism and release tab to prevent access to the strike plate by children.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: March 9, 1976
    Inventors: Gerald E. Blom, Robert W. Van Leuven