Hierarchy classification:

1. top of the aat hierarchies
2. Brand Names Facet
3. Brand Names (hierarchy name)
4. brand name objects

Anotations

Scope note:

Brand name vessels with double insulating walls separated by a vacuum that serve to regulate the temperature of liquids stored within. For the generic object originally invented by Sir James Dewar use "vacuum flasks." Thermos (TM) is a proprietary name for these objects. With a small initial 'thermoses' is frequently applied loosely to vacuum flasks in general.