Cullumber Company purchases a patent for $154.000 cash on January 2, 2021 Its legal life is 20 years and its estimated useful life is 8 years. Record the purchase of the patent on January 2, 2021 (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry for the account titles and enter O for the amounts.) Date Account Titles and Explanation Debit Credit Jan. 2 (To record cash purchase of patent.) Record amortization expense for the year ended December 31, 2021. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry for the account titles and enter for the amounts.) Date Account Titles and Explanation Debit Credit Dec. 31 (To record amortization expense.)