Browsing all articles tagged with curta calculator


Pawn Stars shows Antique Curta Calculator

Last night’s episode of Pawn Stars featured an Antique Curta Calculator. Introduced in 1948 by Austrian Curt Herzstark, this mechanical device was the world’s first handheld four-function calculator. Herzstark filed for U.S. patent protection in October 1949 for his “Independent Actuator Tens Transformer” invention.  Patent #2,588,835 issued to Herzstark in 1952. As Rick Harrison mentioned [...]

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