Patents Assigned to Kateka B.V.
  • Ventilation grating for use in window frames together with sealed unit insulating glass
    Patent number: 4512244
    Abstract: A closable ventilation grating of the type having two grids, one being slidable along the other, which is adapted for use with sealed unit insulating glass is disclosed. The grating comprises a lower, hollow member which has parallel pending flanges for mounting the grating on sealed unit insulating glass. The grating also comprises grids which are easily adaptable to a desired length as they are comprised of a number of similar, standardized sections and a standardized operating section where required.
    Type: Grant
    Filed: November 23, 1983
    Date of Patent: April 23, 1985
    Assignee: Kateka B.V.
    Inventor: Jan J. Knaap