Patents by Inventor Darrell Costello

Darrell Costello 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).

  • Spool for dispensing bags
    Patent number: D699965
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: February 25, 2014
    Assignee: Roplast Industries, Inc.
    Inventors: Darrell Costello, Robert T. Bateman
  • Spool dispenser
    Patent number: D725400
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: March 31, 2015
    Assignee: Roplast Industries, Inc.
    Inventors: Darrell Costello, Robert T. Bateman
  • Spool dispenser
    Patent number: D737071
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: August 25, 2015
    Assignee: Roplast Industries, Inc.
    Inventors: Darrell Costello, Robert T. Bateman