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Patent portfolio assigned to HyperTunnel (verified via public assignee records). Estimated patent count: 2. Note: this is the well-known hyperTunnel (Hampshire, UK; swarm-robotics 3D-printed tunnels), listed as US in source data but it is a UK firm; reportedly fell into administration. Patents held by Hypertunnel Ltd / Hypertunnel IP Ltd (e.g. WO2020193960A1 'Method and system of constructing an underground tunnel', CA3197369A1 borehole imaging). No named customers found (pre-revenue trial/R&D stage).