Patents by Inventor Maria Zipf

Maria Zipf 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).

  • Tactile toy for infants
    Patent number: D765811
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: September 6, 2016
    Inventor: Maria Zipf
  • Tactile toy for infants
    Patent number: D774147
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: December 13, 2016
    Inventor: Maria Zipf
  • Tactile toy for infants
    Patent number: D775695
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 3, 2017
    Inventor: Maria Zipf
  • Tactile toy for infants
    Patent number: D775696
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 3, 2017
    Inventor: Maria Zipf
  • Tactile toy for infants
    Patent number: D775697
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: January 3, 2017
    Inventor: Maria Zipf