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Polymer80, Inc. was an American manufacturer of firearms parts kits that included unfinished receivers (also known as "80 percent" receivers) used for making privately made firearms. The company was founded in 2013 by Loran Kelley Jr. and David Borges and was headquartered in Dayton, Nevada .
When they do replace the carpet in their cars they have quite a few options in molded carpet. There are several websites that specialize in molded carpets. There are several styles of molded carpet, the most popular include 80-20 loop, cutpile and essex. Most cars from the 1940s to the mid-1970s used 80-20 loop carpet.
The Colt M1911 (also known as 1911, Colt 1911, Colt .45, or Colt Government in the case of Colt-produced models) is a single-action, recoil-operated, semi-automatic pistol chambered for the .45 ACP cartridge. [10]
1960 onwards: The hip replacement operation (in which a stainless steel stem and 22mm head fit into a polymer socket and both parts are fixed into position by PMMA cement) pioneered by John Charnley (1911–1982). 1960s: First use of sodium cromoglycate for asthma prophylaxis associated with Roger Altounyan (1922–1987). [96]
The polymer separated from the glass as a clear plastic sheet, which Röhm gave the trademarked name Plexiglas in 1933. [5] Both Perspex and Plexiglas were commercialized in the late 1930s. In the United States, E.I. du Pont de Nemours & Company (now DuPont Company) subsequently introduced its own product under the trademark Lucite.
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
On 1 July 2015, New York City became the largest city in the United States to attempt to prohibit the sale, possession, and distribution of single-use polystyrene foam (the initial decision was overturned on appeal). [82] In San Francisco, supervisors approved the toughest ban on "Styrofoam" (EPS) in the US which went into effect 1 January 2017.
Over 80% of Greenland lies north of the Arctic Circle. Greenland is bordered by the Arctic Ocean to the north, the Greenland Sea to the east, the North Atlantic Ocean to the southeast, the Davis Strait to the southwest, Baffin Bay to the west, the Nares Strait and Lincoln Sea to the northwest.