Patents by Inventor David D. Croft

David D. Croft 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).

  • Manual valve actuator with cam
    Patent number: D500842
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: January 11, 2005
    Assignee: Swagelok Company
    Inventor: David D. Croft
  • Manual valve actuator with cam
    Patent number: D511369
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: November 8, 2005
    Assignee: Swagelok Company
    Inventor: David D. Croft
  • Actuator handle
    Patent number: D493870
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: August 3, 2004
    Assignee: Swagelok Company
    Inventor: David D. Croft