Friedrich Christoph Müller (1751 in Allendorf (Lumba) - 1808): theologian and cartographer (in Schwelm between 1785 and 1808)
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Schwelm ist twinned with the small French borough of Fourqueux, situated in the Paris agglomeration adjacent to Saint-Germain-en-Laye.
In October 2008, to expand its portfolio, Siemens acquired Schwelm based 'Innotec GmbH' - an international vendor of digital engineering software and services for the process industry, and known for its COMOS platform .
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Gomolzig is a German aircraft and engineering manufacturer based in Schwelm, Koblenz and Breitscheid, that services and has built under license a variety of powered and glider aircraft.