Fields Laboratories holds a valuable patent (No. 758-6002-1A) on a precipitator that prevents certain types of air pollution. Fields does not manufacture or sell the products and processes it develops. Instead, it conducts research and develops products and processes which it patents, and then assigns the patents to manufacturers on a royalty basis. Occasionally it sells a patent. The history of Fields patent number 758-6002-1A is as follows. Date 2008-2009 Jan. 2010 March 2010 Jan. 2011 Cost $374,000 87,200 21,000 76,500 Activity Research conducted to develop precipitator Design and construction of a prototype Testing of models Fees paid engineers and lawyers to prepare patent application; patent granted June 30, 2011 Engineering activity necessary to advance the design of the precipitator to the manufacturing stage Legal fees paid to successfully defend precipitator patent Research aimed at modifying the design of the patented precipitator Legal fees paid in unsuccessful patent infringement suit against a competitor Nov. 2012 Dec. 2013 April 2014 July 2018 92,000 21,000 22,000 34,000 Fields assumed a useful life of 17 years when it received the initial precipitator patent. On January 1, 2016, it revised its useful life estimate downward to 5 remaining years. Amortization is computed for a full year if the cost is incurred prior to July 1, and no amortization for the year if the cost is incurred after June 30. The company's year ends December 31. Compute the carrying value of patent No. 758-6002-1A on each of the following dates: (a) December 31, 2011 s (b) December 31, 2015 (c) December 31, 2018