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  Scientific apparatus and instruments

  Hewlett-Packard Model 35 Calculator with case

  • 1972

  Developed in 1972, the HP-35 was Hewlett Packard's first pocket calculator and the first pocket calculator ever to have transcendental functions. Twenty HP engineers spent two years and approximately $1 million…

  • Manufacturer Hewlett-Packard Company
  • Subject Pocket calculators, Calculators, Hewlett-Packard Company