{
  "patent_number": "US 388116",
  "country": "US",
  "title": "How William Burroughs Invented the First Practical Adding Machine",
  "original_title": "burrouahs",
  "summary": "An 1888 patent for a mechanical calculating machine that used a system of levers and gears to perform accurate arithmetic operations.",
  "what_it_does": "This patent describes a mechanical device designed to perform mathematical calculations through a system of interconnected keys, levers, and rotating gear wheels. When a user presses a key, it moves a specific lever that rotates a gear by a set amount corresponding to the number pressed. The machine uses a carry mechanism to transfer values from one decimal column to the next, ensuring that addition is performed correctly across multiple digits.",
  "what_it_does_not_cover": [
    "Does not cover electronic or digital computation methods.",
    "Does not cover software-based calculators or algorithms.",
    "Does not cover devices that rely on electricity or batteries for power.",
    "Does not cover non-mechanical input methods like touchscreens or voice."
  ],
  "filed": null,
  "granted": "1888-08-21",
  "expires": null,
  "status": "active",
  "holder": "William S. Burroughs",
  "holder_url": "https://patentbrief.org/company/william-s-burroughs",
  "inventors": [],
  "times_cited": 2,
  "tags": [
    "mechanical",
    "finance"
  ],
  "abstract": null,
  "url": "https://patentbrief.org/patent/us/388116/adding-machine-burroughs",
  "markdown_url": "https://patentbrief.org/patent/us/388116/adding-machine-burroughs/md",
  "google_patents_url": "https://patents.google.com/patent/US388116",
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}