Forward Citations

How the Iron Lung Artificial Respirator Works

Patents that cite US 1906844 — inventions that reference this patent as foundational prior art in their own applications. High forward citation counts indicate an influential patent.

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7 patents

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Citation network

This patent has been cited by 7 later patents. Citation detail pages are being built out in Phase 2.

Forward citation data is sourced from the USPTO patent database. Only patents indexed in PatentBrief are shown as links.