work. Copyrights are registered in the copyright office in the library of congress. A copyright lasts for the life of the author plus 50 years.
             A patent grants one person the right to manufacture a new and useful thing. A patent is good for a varying amount of years. Presently, the patent of an invention is good for 17 years. The patent and trademark office in the Department of Commerce issues patent laws.
             Under the constitution, congress is granted the power to set a standard for weights and measure across the United States. Under this power, congress has set the English system as the standard for use in the United States. Since then, congress has legalized the use of the Metric system. The National Institute for standards and Technology keeps the original standards for the It is by these standards that all other measures in the U.S. are teste
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