Patents by Inventor E. Carl Dittrich

E. Carl Dittrich 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).

  • Ullage tube viewing device
    Patent number: 5176029
    Abstract: A ullage tube viewing device for visual checking of liquid cargo levels without releasing hazardous vapors is disclosed and a method of quickly installing such device in a ullage tube in the absence of heat.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: January 5, 1993
    Assignee: Maritrans Operating Partners L.P.
    Inventor: E. Carl Dittrich