The intangible assets section of Sheffield Corporation's balance sheet at December 31, 2022, is presented here. Patents ($70,300 cost less $8,800 amortization) $61,500 Copyrights ($64,500 cost less $51.300 amortization) 13,200 Total $74.700 The patent was acquired in January 2022 and has a useful life of 10 years. The copyright was acquired in January 2016 and also has a useful life of 10 years. The following cash transactions may have affected intangible assets during 2023 Jan 2 Jan June Sept L Oct 1 Paid $63,000 legal costs to successfully defend the patent against intringement by another company Developed a new product, incurring $258,000 in research and development costs. A patent was granted for the product on July 1. and its useful life is equal to its legal life. Legal and other costs for the patent were $40.000 Paid $47,000 to a quarterback to appear in commercials advertising the company's products. The commercials will air in September and October Acquired a copyright for $247,000. The copyright has a useful life and legal life of 50 years.