1922 Ad Thermos Bottle Vacuum Flask Dewar Insulation - ORIGINAL ADVERTISING SEP4

This is an original 1922 black and white print ad for Thermos bottles. CONDITIONThis 89+ year old Item is rated Near Mint / Very Fine. Light aging throughout. No creases. No natural defects. No tears. Product Type: Original Print Ad; Black / White Grade: Near Mint / Very Fine Dimensions: Approximately 2.5 x 12.25 inches; 6 x 31 cm Authentication: Serial-Numbered Certificate of Authenticity w/ Full Provenance Protection: Packaged in a custom archival sleeve with an acid-free black board (great for display, gift-giving, and preservation) Thermos. Thermos L.L.C., founded in 1904, is the worldwide leader in manufacturing of insulated and vacuum sealed food and beverage containers. The company name has become the generalized term for all vacuum flasks. Amongst chemists the thermos is known as a Dewar flask, in recognition of the inventor, Sir James Dewar. In addition to the vacuum flask, Thermos is credited with the invention of the vacuum-insulated double-walled Pyrex glass vesse