52138 ⎘
Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using preformed elements using plugs sealing in the hole expandable
Sub-classes:Device and method for repairing a damaged zone of an intermediate layer of a multilayer structure by way of deformable corrugated rings
#2Method of repairing honeycomb core using pourable structural foam
#3Method for the localized working of a structural component at a working location