Underwater vessels adapted for special purposes

Official title: {Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations (self-propelled or direction controlled diving chambers with mechanical link to a base B63C11/42)}

B63G8/001 (Underwater vessels adapted for special purposes) appears on 1,220 US grants and 1,401 published applications in this corpus.