Holze Musis Company purchased for $600,000 a patent for a new sound system. Although it gives legal protection for 20 years, the patent is expected to provide the company with a competitive advantage for only six years. Make journal entires to record (a) the purchase of the patent and (b) amortization for year 1.

After using the patent for two years, Holze Music Company's research director learns at a professional meeting that BOSE is designing a more powerful system. On the basis of this new information, Holze Music Company determines that the patent's total useful life is only four years. Record amortization for year 3.