Amortization entries Kleen Company acquired patent rights on January 10 of Year 1 for $504,000. The patent has a useful life equal to its legal ife of 8 years. On January 7 of Year 4 , Kleen successfully defended the potent in a lawsuit at a cost of $25,000. a. Determine the patent amortization expense for the Year 4 ended December 31. b. Joumalize the adjusting entry on December 31 of Year 4 to recognize the amortization. If an amount box does not require an entry, leave it biank