Patents by Inventor Cristtian A. Cerna

Cristtian A. Cerna 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).

  • Layout ruler
    Patent number: D593886
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: June 9, 2009
    Inventors: Josef Mirer, Ognjen Pavic, Cristtian A. Cerna
  • Connecting clip
    Patent number: D601882
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: October 13, 2009
    Inventors: Josef Mirer, Ognjen Pavic, Cristtian A. Cerna
  • Protection clip
    Patent number: D605934
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: December 15, 2009
    Inventors: Josef Mirer, Ognjen Pavic, Cristtian A. Cerna
  • Track hanger
    Patent number: D669766
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: October 30, 2012
    Inventors: Josef Mirer, Cristtian A. Cerna
  • Track hanger
    Patent number: D674680
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: January 22, 2013
    Inventors: Josef Mirer, Cristtian A. Cerna
  • Stud cover
    Patent number: D696570
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: December 31, 2013
    Inventors: Josef Mirer, Cristtian Cerna
  • Temporary door assembly for use during construction
    Patent number: D752772
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: March 29, 2016
    Assignee: LEVEL HEADED PRO TOOLS LLC
    Inventors: Josef Mirer, Cristtian Cerna