The diffraction grating includes an array of elongated parallel dielectric ribs (26) in accordance with PQG > λ/2 where PDG is the period of the ribs.

The at least one raised feature may include, for example, a network of ribs and/or dots.

The web is adapted to fit flush against the door.

The vacuum bag has a network of veins (79) or nubs (61) to distribute the flow of polymeric material.

The membrane structure is divided into a plurality of self-supporting thin membrane regions by a network of thicker integrated support ribs.

The support layer is divided into a plurality of self-supporting thin membrane regions by a network of thicker integrated support ribs.

A folded sheet is used as a basis for a fin array to cool laser modules.

Almost square in shape, from its unique central pillar unfolds a dense network of ribs.

The membrane structure may be prepared by laminating a thin electrolyte layer with a thicker ceramic layer that forms a network of support ribs.

An internally threaded plastic closure in accordance with the present invention includes an array of axially extending, circumferentially spaced internal ribs which intersect the internal thread formation of the closure.

An endovenous valve transfer stent (10) has an elongated tubular open-work body (12) having a network of longitudinally extending ribs (13) interconnected by laterally extending zigzag struts (14).

Its color varies from reddish brown to golden yellow while its grains may display seductive pseudo-figurative patterns.

The leaves are glossy, dark green, up to 20 cm long, with large teeth at the edges and a whole network of leaf veins.

The diffraction grating includes an array of elongated parallel dielectric ribs (26) in accordance with PQG > λ/2 where PDG is the period of the ribs.

The socket includes a web with a plurality of beams (20) thereon.