A perfected plug, of the laminar condition, with edges refuted on the lateral and external edges of the bottle (Machine-translation by Google Translate, not legally binding)

摘要

A perfected plug, of the laminar condition, with edges refuted on the lateral and external edges of the bottle, characterized by the fact that it presents the edges cut according to a series of teeth, which start from the curved annular area of the disc; in turn these teeth are curved forming eyelashes with their tips or free ends directed outwards. (Machine-translation by Google Translate, not legally binding)