Patents Assigned to Jochen Plen, KG
  • Ski
    Patent number: 4147377
    Abstract: A ski, particularly a cross-country ski having improved sliding and adhering properties, which comprises a running surface subdivided into at least two zones, which can include an obtuse angle between them, and/or wedge-shaped parts on its top surface.
    Type: Grant
    Filed: December 23, 1976
    Date of Patent: April 3, 1979
    Assignee: Jochen Plen, KG
    Inventor: Hans-Joachim Plenk