who is given credit for inventing the aqua lung
Jacques Cousteau engineer Émile Gagnan Émile Gagnan
title: Aqua-Lung text: Aqua-Lung Aqua-Lung was the first open-circuit, self-contained underwater breathing apparatus (or "SCUBA") to reach worldwide popularity and commercial success. This class of equipment is now commonly referred to as a diving regulator or demand valve. The Aqua-Lung was invented in Paris during the winter of 1942–1943 by two Frenchmen: the engineer Émile Gagnan and Naval Lieutenant ("lieutenant de vaisseau") Jacques Cousteau. It allowed Cousteau and Gagnan to film and explore more easily underwater. An earlier underwater breathing regulator, known as the "régulateur," was invented in France in 1860 by Benoît Rouquayrol. He first conceived it as a device to help title: Louis Agassiz Shaw Jr. text: Louis Agassiz Shaw Jr. Louis Agassiz Shaw Jr. (September 25, 1886 – August 27, 1940) was an instructor of physiology at the School of Public Health of Harvard University, where he is credited in 1928 along with Philip Drinker for inventing the Drinker respirator, the first widely used iron lung. Shaw's parents were Louis Agassiz Shaw Sr. and Mary Elizabeth Saltonstall. Both parents came from wealthy and politically influential Boston Brahmin families with roots extending back to the "Mayflower". The couple's elder son was Quincy Adams Shaw III (born May 21, 1885). Louis Sr. died at home in Chestnut Hill title: Louis Agassiz Shaw Jr. text: The air pumps changed the pressure inside a rectangular, airtight metal box, pulling air in and out of the lungs. Louis Agassiz Shaw Jr. Louis Agassiz Shaw Jr. (September 25, 1886 – August 27, 1940) was an instructor of physiology at the School of Public Health of Harvard University, where he is credited in 1928 along with Philip Drinker for inventing the Drinker respirator, the first widely used iron lung. Shaw's parents were Louis Agassiz Shaw Sr. and Mary Elizabeth Saltonstall. Both parents came from wealthy and politically influential Boston Brahmin families with roots extending back to the "Mayflower". The title: Aqua-Lung text: the other or if, in fact, they were truly spontaneous inventions. There seems to be some evidence that the Divers Supply unit hit the market just prior to the Eldred Porpoise, but there is no evidence that Eldred was aware of it. In the early years of scuba diving in Britain, "tadpole" was a nickname for a type of diving gear that had two meanings: "Aqualung", "Aqua-Lung", and "Aqua Lung" are registered trademarks for scuba diving breathing equipment. That trade name was originally owned in the United States by a company known as U.S. Divers (now Aqua Lung America). The title: Aqua-Lung text: contract, no one had even heard of their product, but everyone was familiar with the names he had registered. Bussoz sold the company and the trade names for a handsome profit, returning to France. The name US Divers sounded very official and very American, but it was owned by a Frenchman and sold to a French company. Air Liquide held the patent on the original "Aqualung" (also written as "Aqua-Lung" or "Aqua Lung") until the patent expired sometime around 1960 to 1963. The term "Aqualung", as far as is known, first appeared in print on page 3 of Jacques-Yves Cousteau's