Patents by Inventor Andrew Callander

Andrew Callander 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).

  • Telescopic tool with interchangeable end
    Patent number: D561543
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: February 12, 2008
    Assignee: Collander Equipment Supplies
    Inventor: Andrew Callander
  • Telescopic tool
    Patent number: D487559
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: March 16, 2004
    Assignee: Callander Equipment Supplies
    Inventor: Andrew Callander