Opera hat described as: Some sources have taken this to describe an early folding top hat, although it is not explicitly stated whether Dollman's design was specifically for male or female headgear. Dollman's patent expired in 1825. Operating from Poissy, Paris, France, around 1840, Antoine Gibus's design for a spring-loaded collapsible top-hat proved so popular that hats made to it became known as "gibus". They were also often called "opera hats" due to the common practice of storing them in their flattened state under one's seat at the opera, though the term can also refer to any tall formal men's hat. The
Top hat satirists and social critics as a symbol of capitalism or the world of business (one current example is the Monopoly Man). The use of the top hat persisted in politics and international diplomacy for many years, including at U.S. presidential inaugurations, the last being worn at the inauguration of John Fitzgerald Kennedy in 1961. The top hat also forms part of the traditional dress of Uncle Sam, a symbol of the United States, generally striped in red, white and blue. The top hat is also associated with stage magic, both in traditional costume and especially the use of hat tricks.