Patents by Inventor George Barthule

George Barthule 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).

  • Metal chain sling
    Patent number: 4059302
    Abstract: A sling comprising a plurality of metal chains placed in side-by-side parallel arrangement, a metal terminal at each end of the sling, with both the ends of at least some of the chain lengths being connected thereto, the metal chains being positioned with the links in a plurality of rows lateral to the length of the sling, and a flexible metal cable threaded in a serpentine manner through the center of all the links in a plurality of adjoining rows for most of the length of the sling.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: November 22, 1977
    Assignee: Liftex Slings, Inc.
    Inventor: George Barthule