Slide rule
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United States of America Patent
Stats
-
Dec 30, 1980
Grant Date -
N/A
app pub date -
Jun 19, 1979
filing date -
Jun 19, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel product selection slide rule is disclosed which allows the user of the slide rule to quickly determine which product from a grouping of products is best for a particular condition or property which he selects. The applicant's slide rule isolates the product best suited to the application out of a multiplicity of products and possibilities. The novel slide rule comprises a front and back cover with the front cover containing a plurality of viewing apertures and a plurality of stylus apertures. Between the front and back cover is positioned a central filler and a plurality of movable elongated slides are positioned within an elongated opening in the central filler. Each slide has formed thereon predetermined zones of different indicia for viewing through a plurality of viewing aperatures on the front cover.
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