Patent · US Expired

Color scale palette

US4541801A · kind A · utility

9Cited by
2References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 13, 1984
Grant dateSep 17, 1985
Priority date
Expiry dateApr 13, 2004

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61C19/10
  • WIPO fieldMedical technology
  • WIPO sectorInstruments

Abstract

A color scale palette has color sample rods tinted all along their lengths from a stem in a frame to the other end projecting from the frame. The frame has a window for exposing a portion of the color sample rods and, for example, a color key, and studs cooperative with a bore through the stem end of each color sample rod for snapping it into the frame. The bore is preferably a funnel-shaped for shadow-free as well as juxtaposed color comparisons.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.