Boots – shoes – and leggings
Patent
1987-05-28
1989-01-24
Harkcom, Gary V.
Boots, shoes, and leggings
364564, 3647101, 36471014, G06F 738, G06F 314
Patent
active
048005142
ABSTRACT:
A specialized dimension proportioning hand-held calculator designed specifically for computing percent reductions of photographs in the graphic arts field. The calculator computes the percent reduction from an original width or height of the photograph and from the desired reduction width or height in decimal notation and fractional notation. The calculator also is designed to perform basic mathematical functions. The calculator is generally comprised of a mode selection device, a numerical keyboard, a keyboard display, a percent reduction display, a power cell, and four display cells comprised of decimal and fraction displays, an enter key, a constant key, and a display cell clear key. The calculator components are encased in a generally hard, rectangular casing. Power for the calculator is supplied by the power cell.
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Harkcom Gary V.
Rosenbaum David G.
Shaw Dale M.
Weiss Harry M.
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