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The Holset Engineering Co. produced turbochargers, primarily for diesel and heavy duty applications, of Huddersfield.
1948 W. C. Holmes became interested in Louis Croset's flexible coupler design for engines. The company started when Paul Croset was convinced to start up and manage the venture.
1954 Holset took a licence from Dr. Alfred Buechi to manufacture his turbocharger design.
c.1957 Louis Schwitzer's company in Indianapolis, Indiana had developed a small lightweight turbocharger and a close association and licence agreement was arranged between Holset and Schwitzer. Holset designed and manufactured turbochargers for the European market where Schwitzer did not then have manufacturing facilities.