Calculator apparatus

Registers – Calculators – Input-output calculator to indicator – printer – etc.

Reexamination Certificate

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Details

C235S05900T, C235S14500A, C705S019000

Reexamination Certificate

active

07427013

ABSTRACT:
A calculator is provided that includes an input pad that includes a sales tax button and a currency pad, which includes a change due button and a number of currency keys. The currency keys can be depressed in order to enter numeric values associated with currency. The change due button may be used in order to produce a resultant between data provided in the input pad and the currency pad.

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patent: 0 617 388 (1994-09-01), None

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