# John L. Mason — Patents explained on PatentBrief

John L. Mason has 1 landmark patent explained in plain English on PatentBrief.

- [John Mason's 1858 Patent for the Mason Jar Lid](https://patentbrief.org/patent/us/22186/mason-jar) — granted 1858
  An 1858 invention by John L. Mason that introduced a threaded glass jar and a screw-on metal lid to create an airtight seal for home food preservation.

**Full profile:** https://patentbrief.org/company/john-l-mason

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