×

Pocket calculator with credit card controller and dispenser

  • US 4,719,338 A
  • Filed: 08/12/1985
  • Issued: 01/12/1988
  • Est. Priority Date: 08/12/1985
  • Status: Expired due to Term
First Claim
Patent Images

1. A transaction processing device comprising ahand held calculator having keyboard means and display means operably associated to input data and to display said data, afirst credit card carried by the calculator and being electrically alterable and having memory means therein and accessible by the calculator for providing a plurality of functions, asecond credit card carried by the calculator and usable to transact operations remote from the calculator,first and second slots for containing said first and second credit cards in positions wherein said first credit card is positioned between said second credit card and said calculator, andswitch means on the calculator slidable to one of a plurality of positions for making a selection of normal calculator operation or for reading information from the first credit card for processing thereof relative to said functions including display of information, reading and accessing information, and setting of information.

View all claims
  • 10 Assignments
Timeline View
Assignment View
    ×
    ×