rigid wood panels and foam boards for use as cores in composite materials for industrial and building applications; composite panels made primarily from nonmetallic materials, namely, panels in flexible and rigid configurations having cores of wood, foam or honeycomb

Refractory shelves for pottery kilns

Sequence flashing lights for approach lighting systems at airports; and runway end identifier lights for airports

balsa wood core materials

hollow ceramic cores for use in the metal casting industry

light-weight thermoplastic honeycomb for industrial tooling applications