# Gagnan Emile — Patents explained on PatentBrief

Gagnan Emile has 1 landmark patent explained in plain English on PatentBrief.

- [How the Aqua-Lung Scuba Regulator Works](https://patentbrief.org/patent/us/2485039/aqualung-scuba-cousteau-gagnan) — granted 1949
  The foundational 1947 patent by Jacques Cousteau and Emile Gagnan for the automatic demand regulator that allows divers to breathe compressed air underwater.

**Full profile:** https://patentbrief.org/inventor/gagnan-emile

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