# Parsons Corp — Patents explained on PatentBrief

Parsons Corp has 1 landmark patent explained in plain English on PatentBrief.

- [How Early Numerical Control Systems Automated Industrial Milling Machines](https://patentbrief.org/patent/us/2820187/numerical-control-machine-tool-parsons) — granted 1958
  A 1952 invention by John Parsons that used punched cards to automatically guide machine tools, effectively launching the era of computer-aided manufacturing.

**Full profile:** https://patentbrief.org/company/parsons-corp

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