Shoppers calculator

Details Shoppers calculator Shoppers calculator

1982-02-18

1984-05-01

Chin, Gary

Boots, shoes, and leggings

364715, 364464, 280 3399A, G06F 1520

Patent

active

044465289

ABSTRACT:
A hand-held apparatus is provided for determining the most economical purchase among products available in at least two sizes and at different prices, in conjunction with a price reduction product ("cents off") coupon. While requiring no knowledge of algebra or calculator functions of the user, the apparatus optimizes shoppers' decisions based on manual entry of product prices, sizes and coupon values. In preferred embodiments, not only is the optimum decision displayed, but further, the device may be used for accumulating total expenditures and may be used for incidental calculations.

REFERENCES:
patent: 2716520 (1955-08-01), Kellogg et al.
patent: 3262639 (1966-07-01), Karp
patent: 3806711 (1974-04-01), Cousins, Jr.
patent: 4039805 (1977-08-01), Newell
patent: 4071740 (1978-01-01), Gogulski
patent: 4075696 (1978-02-01), Shinoda et al.
patent: 4095274 (1978-06-01), Gordon
patent: 4100602 (1978-07-01), Shapiro
patent: 4115870 (1978-09-01), Lowell
patent: 4192006 (1980-03-01), Hausdorff
patent: 4334278 (1982-06-01), Marmon

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