Fecha de publicación: 13/02/1980 Fuente: WIPO "royal booby" The device comprises a thermally insensitive container (1) for the pyrolysable material, such as paper documents, an electrical heating resistor (9) in the container (1) lying adjacent the pyrolysable material, and an electrical battery (4) connected to the heating resistor (9) and controlled by an actuating device (7, 19) which, when operated, will cause the battery (4) to discharge through the heating resistor (9) to destroy the adjacent pyrolysable material.