Slide calculator with liner

Details Slide calculator with liner Slide calculator with liner

1994-05-24

1995-09-12

Stephan, Steven L.

Registers

Calculators

Bar

G06G 102

Patent

active

054498902

ABSTRACT:
A slide calculator includes a sleeve having a plurality of windows for presenting data from three variables arranged in matrices of rows and columns. Opposite sides of the sliding card include data with the rows and columns interchanged. The sleeve surrounding the sliding card is lined with a transparent plastic.

REFERENCES:
patent: 3747847 (1973-07-01), Cohen
patent: 4028529 (1977-06-01), Van De Weghe

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