# Gerstenzang Leo — Patents explained on PatentBrief

Gerstenzang Leo has 1 landmark patent explained in plain English on PatentBrief.

- [How the First Cotton Swabs Were Mass-Produced](https://patentbrief.org/patent/us/1721815/q-tip-cotton-swab) — granted 1929
  Leo Gerstenzang's 1929 patent for the automated manufacturing of cotton-tipped applicators, the invention that created the modern Q-Tip.

**Full profile:** https://patentbrief.org/inventor/gerstenzang-leo

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