both layers being foamed or specifically porous

Full Title

Layered products characterised by the non-homogeneity or physical structure of a layer > characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous > both layers being foamed or specifically porous

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

LAYERED PRODUCTS

Subclass:

LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM