Patents by Inventor Douglas F. Sheridan

Douglas F. Sheridan 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).

  • Patent number: D436326
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: January 16, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436328
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: January 16, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436329
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: January 16, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436552
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 23, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436553
    Type: Grant
    Filed: January 4, 2000
    Date of Patent: January 23, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436554
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: January 23, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436555
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: January 23, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436886
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: January 30, 2001
    Inventor: Douglas F. Sheridan
  • Patent number: D436889
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: January 30, 2001
    Inventor: Douglas F. Sheridan