Patents by Inventor David J. Siefert

David J. Siefert 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).

  • Convertible top stack latch
    Patent number: 5301987
    Abstract: A latching mechanism for a convertible top where a single drive mechanism engages and disengages multiple latching points. The latching mechanism serves not only to secure the convertible top but to pull down the top into position as it is being secured.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: April 12, 1994
    Assignee: ASC Incorporated
    Inventors: Stephen P. Tokarz, David J. Siefert, Stanley S. Maday