Patents by Inventor Robert Markarian

Robert Markarian 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).

  • Grooved round sash weight
    Patent number: D471085
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: March 4, 2003
    Inventor: Robert Markarian
  • Grooved sash weight
    Patent number: D426148
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: June 6, 2000
    Inventor: Robert Markarian
  • Sash weight
    Patent number: D427054
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: June 27, 2000
    Inventor: Robert Markarian