Patents Assigned to Plana-GmbH
  • Plant holder and process for producing the same
    Patent number: 3961445
    Abstract: A plant holder arrangement in which an elastic binding material interconnects a substrate mixture of peat, humus, loam, as well as organic and/or mineral fertilizers. The substrate consists of a mixture of 30 - 70 percent by volume of polyurethane foam flakes with a particle size of 3 - 15 mm.
    Type: Grant
    Filed: February 12, 1974
    Date of Patent: June 8, 1976
    Assignee: Plana-GmbH
    Inventor: David Rack