Patents by Inventor David R. Carls

David R. Carls 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).

  • Patent number: 7120969
    Abstract: A binder clip comprising a first side panel, second side panel and third side panel, integral with one another and arranged in the shape of a triangle, the first and third side panels having curled edge portions, and the first and third side panels spring-biased toward one another, a first and second lever made of wire and forming a loop, the first and second lever pivotally fixed to the first side panel and third side panel, respectively, the first and second levers arranged to pivot. The first and second levers are arranged to be retained or locked by linear protrusions emanating upwardly from the first and third side panels, respectively.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: October 17, 2006
    Inventor: David R. Carls