Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. glass (material)
8. [glass by technique]

Anotations

Scope note:

A type of deeply etched, crystalline glass developed by Bernard O. Gruenke and his son, Bernard E. Gruenke, Jr., in the 1970s. The glass was inspired by a Czechoslovakian etched glass exhibit they saw at the World's Fair in Osaka, Japan; they called their glass "leptat," a word derived from the Czech meaning "to etch," in honor of its inspiration. The etching technique was later patented.