Patents Represented by Attorney, Agent or Law Firm Alec Messulam
  • Electronic calculator
    Patent number: 6820800
    Abstract: An electronic calculator having means for enabling a user to input a calculation, characterized in that the calculator has a mode of operation in which the user is required to input additionally at least one estimate of the result of the calculation before the correct result of the calculation is displayed.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: November 23, 2004
    Inventor: Ilan Zadik Samson