Using symbols, letters, name or combination of these by a company to distinguish its products is
Answer Details
The term that refers to using symbols, letters, name or combination of these by a company to distinguish its products is "trade mark". A trademark is a legally registered symbol, name, or logo that is used to identify and distinguish a company's products or services from those of others. It can be a word, phrase, symbol, design, or a combination of these elements. A trademark helps customers recognize a company's products and builds brand recognition and loyalty. It also protects a company's intellectual property rights by preventing others from using the same or similar mark to sell their products.