Zilper Trenchless Patents

Patent portfolio assigned to Zilper Trenchless (verified via public assignee records). MIT-spun trenchless pipe-installation startup (patented 'Assisted Dynamic Boring' technology); acquired by Petra ('Zilper a Petra Company'). Patent search confirms Zilper Trenchless Inc holds trenchless-boring patents (exact count not enumerated). No direct named competitors found in fetched sources; no named customers published.