Patents by Inventor Charlie Richard Bolton

Charlie Richard Bolton 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).

  • Loudspeaker cabinet
    Patent number: D478065
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: August 5, 2003
    Assignee: Koninklijke Philips Electronics N. V.
    Inventors: Charlie Richard Bolton, Stephen Robert Heath
  • Loudspeaker cabinet
    Patent number: D480383
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: October 7, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Charlie Richard Bolton, Stephen Robert Heath
  • Loudspeaker cabinet
    Patent number: D480706
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: October 14, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Charlie Richard Bolton, Stephen Robert Heath
  • Subwoofer
    Patent number: D480707
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: October 14, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Charlie Richard Bolton, Stephen Robert Heath