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Arthur Atwater Kent Sr. (December 3, 1873 – March 4, 1949) was an American inventor and prominent radio manufacturer based in Philadelphia. In 1921, he patented the modern form of the automobile ignition coil .
Spark Museum Light Bulbs Spark Museum AC DC Exhibit. The museum began in 1985 as an informal collection of radio sets, spare parts, schematics, recordings, and vintage magazines and manuals owned by a Bellingham resident, Jonathan Winter [1] Winter's collection continued to grow, and by 1998, the Bellingham Antique Radio Museum was officially established, with the more than 800 radio sets from ...
Although the patent cross-licensing agreements had been intended to give the participants domination of equipment sales, the tremendous growth of the market led to fierce competition, and in 1925 RCA fell behind Atwater Kent as the leader in receiver sales. RCA was particularly hamstrung by the need to coordinate its sales within the limits of ...
The Museum's collections included more than 80,000 objects related to Philadelphia and regional history, including an estimated 10,000 17th- to 20th-century artifacts transferred from the Historical Society of Pennsylvania art and artifact collection in 2009, 1700 Quaker-related items from Friends Historical Association Collection, and collections reflecting Philadelphia manufacturing, the ...
Schematic editors replaced manual drawing of schematic diagrams, but they still retain the capability of outputting schematics on specially formatted sheets. At the same time modern schematic editors capture schematic data in a way suited for automatic processing by further stages of the design cycle.
His cholesterol levels exceeded 1,000 mg per deciliter, far higher than his baseline level, between 210 and 300 mg. Normal cholesterol ranges for adults are below 200 mg, five times lower than ...
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Generator systems have been found to have cracks at the V.C. Summer nuclear plant north of Columbia. Generators are important to prevent nuclear meltdowns in an emergency.