Prototype, Is an early, preliminary model of a product, system, or concept used for testing, design evaluation, and gathering feedback before full-scale production, Innovation, The practical implementation of new or improved ideas, products, services, or processes that create tangible value, Patent, An exclusive legal right granted by a government for an invention—such as a product or process—that is new, useful, and non-obvious, Market demand, Market demand is the total quantity of a product or service that all consumers in a specific market are willing and able to purchase at a given price and time.

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النمط البصري

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