Patents by Inventor Ingvart Friedrichs

Ingvart Friedrichs 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).

  • Wall thermometer
    Patent number: D438476
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: March 6, 2001
    Assignee: Dr. Friedrichs Gruppe Produktions-u. Vertriebs GmbH
    Inventor: Ingvart Friedrichs
  • Weather station
    Patent number: D446133
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 7, 2001
    Assignee: Dr. Friedrichs Gruppe Produktions-und Vertriebs GmbH
    Inventors: Arvid Friedrichs, Ingvart Friedrichs
  • Maximum-minimum thermometer made from aluminum
    Patent number: D451414
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: December 4, 2001
    Assignee: Dr. Friedrichs Gruppe Produktions-und Vertriebsgesellschaft mbH
    Inventor: Ingvart Friedrichs
  • Thermometer
    Patent number: D474121
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: May 6, 2003
    Assignee: Dr. Friedrichs Gruppe Produktions-und Vertriebsgesellschaft mbH
    Inventor: Ingvart Friedrichs