Patents by Inventor Darwin B. Olson

Darwin B. Olson 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).

  • Quick coupling pipe connecting structure with body-tapered sleeve
    Patent number: 5131632
    Abstract: A quickly attachable longitudinally split coupling structure to connect a pair of pipe ends for a leak proof connection, the coupling structure requiring only a tapping tool for installation or removal.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: July 21, 1992
    Inventor: Darwin B. Olson