An inventor of a new machine for canning tomatoes can protect his product by

The inventor of a new machine for canning tomatoes can protect his product by obtaining a patent. A patent is a legal document granted by the government that gives the inventor the exclusive right to make, use, and sell the invention for a certain period of time, usually 20 years. By obtaining a patent, the inventor can prevent others from making, using, or selling the same invention without his permission. This can help the inventor to profit from his invention and prevent competitors from stealing his idea. Obtaining a trademark, labelling the product, or choosing a brand name can also help to protect the inventor's product, but they are not as effective as obtaining a patent in preventing others from copying the invention.