Patents by Inventor Sang B. Chang

Sang B. Chang 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).

  • Labelling machine
    Patent number: 4452667
    Abstract: A labelling machine including a feed roller and a guide member in the form of a tunnel guide member which guides the tape from the roll over the feed roller. The guide member is movable away from the feed roller when the labelling machine is opened to facilitate insertion of the label tape.
    Type: Grant
    Filed: July 9, 1982
    Date of Patent: June 5, 1984
    Inventor: Sang B. Chang