Patents by Inventor David P. Masacek

David P. Masacek 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: D313132
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: December 25, 1990
    Inventor: David P. Masacek
  • Patent number: D321448
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: November 12, 1991
    Inventor: David P. Masacek
  • Patent number: D323592
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 4, 1992
    Inventor: David P. Masacek