Current compressed air dryer types include the following products: 1  Refrigerant type: Cycling. 2  Regenerative desiccant type: Heatless (no internal or external heaters) Heated (internal or external heaters) Heat of Compression. 3  Single Tower Deliquescent. 4  Membrane.
History. Canadian Marcellus Gilmore Edson (February 7, 1849 â March 6, 1940) of Montreal, Quebec was the first to patent peanut butter, in 1884. Peanut flour already existed. His cooled product had a consistency like that of butter, lard, or ointment according to his patent application.
The first individually-wrapped and sold penny candy in the United States was the Tootsie Roll, which was introduced in 1896. The candy was invented by Leo Hirshfield, an Austrian immigrant living in New York City. He named the candy after his daughter, whose nickname was Tootsie..