The Model SRW square-root calculator of 1952, and the EC-130 Most notably with the Model STW fully-automatic calculator of 1949, Carl Friden died inġ945 (aged only 54), but his company went on to continued successes, Machine tools, ordnance, and aircraft instruments. New purpose-built factory in San Leandro in 1937, and aĬalculator production continued during the war years, but theĬompany also played a major role in the manufacture of precision (California) in December 1933, and produced the first calculator to Implementation of the 19th-century Thomas Arithmometer. Like the contemporary Swiss MADAS machine, was essentially a modern Stepped-drum mechanism, with subtraction accomplished via differential
To Marchant in around 1930, and established his own Friden Calculatingįriden based his new machine on the long-established uni-directional Substantial royalties from his inventions. The USA (via Australia) towards the end of the 1914-18 war. John Wolff's Web Museum - Friden John Wolff's Web Museum The Friden Calculating Machine CompanyĬarl Friden (1891-1945) was a young Swedish engineer who arrived in
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