Jan. 1 Purchased a small company and recorded goodwill of $163,000. Its useful life is indefinite. May 1 Purchased a patent with an estimated useful life of 4 years and a legal life of 17 years for $66,000. Prepare all adjusting entries at December 31 to record amortization required by the events. (List all debit entries before Credit account titles are automatically indented when amount is entered. Do not indent manually. If no entry is required, select the account titles and enter 0 for the amounts.)