eBook Amortization of Intangibles For each of the following intangible assets, indicate the amount of amortization expense that should be recorded for the year 2017 and the amount of accumulated amortization on the balance sheet as of December 31, 2017. Trademark Patent Copyright $42,800 $57,600 $64,200 Cost Date of purchase 1/1/10 1/1/12 1/1/15 Useful life indefinite Legal life 10 yrs. undefined 20 yrs. 20 yrs. 50 yrs. Method SL* SL SL *Represents the straight-line method. If an amount is zero, enter "0". Amount 2017 amortization expense Accumulated amortization, Dec. 31, 2017 Trademark Patent Copyright $