Patents by Inventor Alfonso Espinoza

Alfonso Espinoza 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).

  • Multi compartment food service tray
    Patent number: D508634
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: August 23, 2005
    Assignee: Cambro Manufacturing Co.
    Inventors: Paul Bud Chambers, Alfonso Espinoza
  • Sportsman's potty
    Patent number: D471266
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 4, 2003
    Inventor: Alfonso Espinoza
  • Upright handled service tray
    Patent number: D683191
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 28, 2013
    Assignee: Cambro Manufacturing Company
    Inventor: Alfonso Espinoza