when were the first thermos flasks produced for commercial use
Thermos L.L.C. Invented in 1892 by Sir James Dewar, a scientist at Oxford University, the "vacuum flask" was not manufactured for commercial use until 1904, when two German glass blowers, Reinhold Burger and Albert Aschenbrenner, formed Thermos GmbH. They held a contest to name the "vacuum flask" and a resident of Munich submitted "Thermos," which came from the Greek word therme, meaning "heat."
History of Cadbury In 1897, following the lead of Swiss companies, Cadbury introduced its own line of milk chocolate bars.[6]