Patents Examined by M. Rosenbaum
  • Production of net or net-like products
    Patent number: 4038008
    Abstract: An apparatus for the production of perforated tubular film i.e., net is disclosed. A tube of a thermosetting polymer is continuously extruded and the extrusion opening is alternately interrupted first from one side of the tube and then from the other thereby doubling the capacity of the machine.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: July 26, 1977
    Assignee: Conwed Corporation
    Inventor: Ronald Leslie Larsen