Patent print poster of a Towing Canal Boat invented and designed by DeW. Stearns. The patent was issued by the United States Patent Office on January 21, 1879. A pusher, pusher craft, pusher boat, pusher tug, or towboat, is a boat designed for pushing barges or car floats. In the United States, the industries ... Sailing Decor, Boat Decor, Beach House Decor, Make A Boat, Gifts For Sailors, Patent Office, Patent Drawing, Canal Boat, Vintage Nautical