Patents by Inventor David M. Planka

David M. Planka 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).

  • Exterior architectural luminaire
    Patent number: D350408
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: September 6, 1994
    Assignee: Vari-Lite, Inc.
    Inventors: J. Edward Leigh, David M. Planka
  • Handle
    Patent number: D368636
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: April 9, 1996
    Assignee: Doskocil Manufacturing Company, Inc.
    Inventors: David M. Planka, Timothy W. Terleski