# Peter James Crawford — Patents explained on PatentBrief

Peter James Crawford has 1 landmark patent explained in plain English on PatentBrief.

- [How a Handheld Thumb-Controlled Computer Mouse Works](https://patentbrief.org/patent/us/RE40324/playstation-dualshock-controller) — granted 2008
  A handheld mouse designed to be held in the air, using the thumb to control a cursor while fingers rest in ergonomic channels.

**Full profile:** https://patentbrief.org/inventor/peter-james-crawford

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