Unit for preserving wood - comprising wood preservative enclosed in thin casing of fibrous material sealed with coating of water-soluble or water-swellable material
NL8900049A
Wood impregnating element for window frames etc. - has rod with cavity and impregnating assembly with holes in compartments at ends for attachment to other parts sepd. by closure
NL8302998A
Ampoule with wood destruction composition with sealing cap and suitable sealing cap.
