Patents by Inventor Klaus Volckmann

Klaus Volckmann 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).

  • Plant for the production of tubular or hose-like articles of synthetic material
    Patent number: 4072453
    Abstract: A mobile plant for manufacturing corrugated drain pipe includes an extrusion apparatus, a pipe molding means and a coiling machine for coiling up the extruded pipe. The apparatus may conveniently be mounted in a trailer for transport.
    Type: Grant
    Filed: August 11, 1976
    Date of Patent: February 7, 1978
    Assignee: Ziegelwerke Heinrich Oltmanns
    Inventors: Heinrich Oltmanns, Klaus Volckmann