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An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality.These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics, and at reducing or eliminating second-hand tobacco smoke.
The challenged HEPA claims appeared on PuroAir 400 packaging, Amazon storefronts, and PuroAir webpages. The National Advertising Division (NAD) has noted in previous cases that, in the U.S., HEPA is generally defined as a filter’s ability to capture 99.97% of airborne particles that are 0.3 microns in size.
The Superior Air Parts XP-400 is an aircraft engine, designed and produced by Superior Air Parts of Coppell, Texas, United States for use in homebuilt aircraft. [1]The company is owned by the Chinese company Superior Aviation Beijing, which is 60% owned by Chairman Cheng Shenzong and 40% owned by Beijing E-Town, an economic development agency of the municipal government of Beijing.
A modern Purolator oil filter. The company was founded in 1923 as Motor Improvements, Incorporated in New York City. [1] The company's Purolator (initially stylized PurOlator and sometimes Pur-O-Lator) oil filtration device, [2] invented in 1922 by Ernest John Sweetland [3] and George H. Greenhalgh, [1] was standard equipment on early 1920s Chrysler automobiles after being launched on the ...
Pages in category "Companies in the S&P 400" The following 200 pages are in this category, out of approximately 342 total. This list may not reflect recent changes .
G500 at EBACE 2018 Gulfstream GVII-G500 interior. The G500 was taxiing under its own power at its unveiling on October 14, 2014, [13] and it first flew on May 18, 2015. [1] The model was initially planned to be certified in 2017.
The Air Tractor AT-400 is a family of agricultural aircraft that first flew in the United States in September 1979. Type certification was awarded to Air Tractor in April 1980 . Of low-wing monoplane taildragger configuration, they carry a chemical hopper between the engine firewall and the cockpit .
A higher-performance design revision was granted FAA approval as the 14-19 Cruisemaster on September 26, 1949. [2] The new model had structural upgrades, a 190 hp (142 kW) Lycoming O435-A engine, an increased gross weight of 2,600 lb (1,179 kg), hydraulically operated landing gear and flaps, and an improved interior. 99 of these airplanes were produced between 1949 and 1951.
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