# Grandjean Arthur — Patents explained on PatentBrief

Grandjean Arthur has 1 landmark patent explained in plain English on PatentBrief.

- [Early Device for Tracking Objects with a Pen](https://patentbrief.org/patent/us/3055113/etch-a-sketch) — granted 1962
  This 1962 patent describes an early system for tracing the path of an object using a pen-like stylus that records its movement on a surface.

**Full profile:** https://patentbrief.org/inventor/grandjean-arthur

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._