Ava Inc, uses the revaluation model for its patent. The patent was purchased on Jan 1, 2014, for $850,000. At that time the legal life of the patent was 25 years, however the company believed the patent will be useful for 20 years only. The last revaluation of the patent to its fair value took place on December 31, 2018. The following information is provided from Ava's books on December 31, 2020:

Patent	$660,000
Accumulated amortization, recorded up to December 31, 2019.	135,000
Accumulated OCI- revaluation of patent	22,500

Amortization of 2020 has not been recorded yet.

On December 31, 2020, and 2022, the patent fair value is $565,500 and $450,000 respectively.

Required: 

Prepare all the journal entries related to the amortization and revaluation of the patent in 2020, 2021, and 2022.